Index Welcome To Clayton History 3-4 Demographics 5 Contact List 6-7 Resident Services 8-9 Hospitals 10 Places Of Worship 11 Parks 12 Golf Courses 13 Transportation 14 Baby Care/Daycare 15 Senior Services 16 Pet Services 17 Fun Stuff For Kids 18 Places To Eat 19 Shopping 20 Sightseeing 21 Schools 22 School Scores 23
History Local residents first saw the need to incorporate in 1961 when some property owners wanted to annex to nearby Concord. "We knew if that happened, it would split Clayton in half and we'd never have the opportunity to become a city" stated longtime resident Eldora Hoyer. A few people banded together and the incorporation effort appeared as though it would be successful. A feasibility study was conducted, and cityhood seemed like it was just around the corner. However, at the last minute a couple of large landowners pulled out, making incorporation impossible. Things were somewhat quiet for the next couple of years, but in 1963 the movement to become a city once again gained momentum. "There was a lot of concern about the quality of development that was coming in our direction. We didn't really care for the strip businesses along the roads," she said. Some of the incorporation pioneers, besides the Hoyers, were M.F. Ohman, Randall (Chubby) Humble, Henry White, and Lawrence (Joe) Wallace, to name a few. While some property owners had filed papers for annexation with Concord in hopes of getting sewer and water to develop their land, those on the incorporation committee filed a petition to incorporate with the county. In fact, it was Eldora who was given the honor of filing the papers for cityhood. "That was the only way we could delay the annexation process and give people time to think about incorporating," she said. At the same time, the Local Agency Formation Commission (LAFCO) was being formed. That agency still exists today and makes the final decisions regarding annexation proposals in Contra Costa County. "We had a lot of faith that everything was going to work out. The 60s were a big period of growth in the County but things happened a lot slower in Clayton and I'm glad they did," she said. The incorporation proposal was put before a record setting percentage of voters who overwhelmingly favored cityhood, and the first five member Council was elected from a group of 11 candidates. Bob Hoyer was selected by his peers to serve as the first Mayor of the City of Clayton. "Things were a lot different then they are now," he said. "No one was real political in those days so no one was really trying to secure that position. Looking back it was special to serve as the first Mayor, but when your making history, you don't realize it at the time," he added. Henry Wagner was selected to serve as Vice-Mayor and Alvin Liming, David Cook and George Abbott rounded out Clayton's first City Council. The only staff the Council had consisted of a part-time City Clerk and a part-time City Attorney. The Council met at the historic Endeavor Hall. "Our Council meetings were very informal and open to anyone. We didn't have a lot of rules and everyone had ample time to voice their opinions. We didn't try to stifle the public or our critics," he said. Hoyer said the most he ever spent on a campaign in 16 years was $35. 3
History Cont d The prospect for coal was the primary reason for the founding of Clayton. W.K. Taylor surveyed the site in 1858. The first house erected on the present site of the town was built in 1857 by Romero Mauvais, who erected a building and opened a tavern. This latter became the site of the Clayton Hotel. In 1858 George Chapman erected a hotel adjoining, and in 1858, James Curry opened a livery stable. In 1858 Charles Rhine moved his business from a point two miles distant, where he had started a store in 1856, into the town. A. Senderman opened a general merchandise store next to the Chapman Hotel building that same year. In 1857, a religious congregation was organized by a Presbyterian preacher in the home of Howard Nichols; this organization was later merged with a Congregational Church, organized on February 1, 1863, by Rev. J.J. Powell. On November 10, 1867, a church was dedicated by Rev. James W. Brian. On February 28, 1864, the town was nearly wiped out by a disastrous fire. Some of the early settlers of Clayton and the vicinity were; Captain Howard Nichols, J.D. Allen, William Taynton, Milton Shepard, D. Fisher, Adolph Zophy, G.O. Chapman (who had crossed the plain with Fremont in 1846, and who died in 1920), Henry Polly, Isaac Mitchell, C. Ryan, John Collins, Duncans, Donners, Stranahans, Kirkwoods, Myricks and Cowdles. C.E. Westmore (who was the first justice of the peace) and William Morris also filled that position in 1862. When copper was discovered in Clayton, the town was at its height of prosperity up to that point. Mail was delivered on horseback to the "Coal Mines Area" by Frank Leslie "Doug" Mitchell of Clayton and in the 1890's before daily stages linking Martinez, Pacheco, Concord, Clayton, Antioch and the "Mines" began operating from the Atchinson Ranch on Clayton Road in 1989. Jack and George Atchinson, brothers, had horse drawn wagon stages built with large wheels to navigate bad roads in the rainy seasons. They carried passengers, money and freight, as well as the regular mail. Drivers were armed with.45 colt revolvers and required by the U.S. Mail contract regulations. Coal production declined near the end of the century when less expensive and higher quality coal became available from other sources, and agriculture (cattle and dairy ranching, hay and grain production, orchard, vineyard and farm produce) became the valley's economic mainstay. The highest student enrollment ever recorded in the two-room Mt. Diablo School was 111 in 1890, before coal mining ended and as agriculture flourished. Grain was shipped from Pacheco to markets in San Francisco and Sacramento. In the early 1900's, cattle were driven through the hills to the river to be loaded on boats for shipment. Clayton's vineyards produced wines that won state, national and international awards for half a century, until phylloxera infected the grape vines and sale of alcoholic beverages was prohibited in 1919. The almond and walnut orchards replaced the vineyards. Land in the Upper Clayton Valley remained general agricultural until the 1940s. 4
Demographics Population 10,924 (approx.) Department of Finance 1/1/05 Housing Units 3,988 (approx.) 2.76 persons per household. Median Age 41,5 years Land Area 3.9 square miles Government Clayton incorporated as a city as of March 3, 1964 City Hall City of Clayton City Hall 6000 Heritage Trail Climate July is the average warmest month. On average, the coolest month is December. Highest temperature recorded 117 F Lowest temperature recorded 18 F Average rainfall 18 inches Sunny days (annually) 257 Elevation 300 to 1022 Feet (661 average) Local Weather Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Avg. High 53 F 60 F 65 F 71 F 79 F 86 F 91 F 90 F 86 F 78 F 64 F 54 F Avg. Low 38 F 41 F 44 F 47 F 52 F 57 F 58 F 58 F 56 F 51 F 44 F 37 F Mean 46 F 51 F 55 F 59 F 65 F 71 F 74 F 74 F 71 F 64 F 54 F 46 F Avg. Precip. 2.72 2.51 2.16 0.73 0.47 0.09 0.03 0.03 0.24 0.76 1.70 1.89 5
Contact List Emergency Numbers Fire & Rescue 9-1-1 Contra Costa County Fire Protection District (925) 941-3300 Highway Patrol 9-1-1 Contra Costa County Highway Patrol Administrative (925) 646-4980 Police Emergency 9-1-1 Police Administrative (925) 673-7350 Medical Emergency 9-1-1 City of Clayton City of Clayton City Hall 6000 Heritage Trail (925) 673-7300 Clayton Police Department (925) 673-7350 City Administration (925) 673-7300 Finance Department (925) 673-7300 Business License/Code Enforcement (925) 673-7310 Community Development Department (925) 673-7340 Engineering (contract) (925) 672-9700 Maintenance (925) 673-7327 Street lights To report a non-operating street light - PG&E 1-800-PGE-5000 - or Maintenance (925) 673-7327 West Nile Virus Contact the Mosquito and Vector Control if you would like information on the West Nile Virus (925) 685-9301 Voter Registration Voter registration forms are available from: Clayton City offices, 6000 Heritage Trail or County Elections Office at www.co.contra-costa.ca.us (925) 646-4166 6
Contact List Clayton Police Department 6000 Heritage Trail Emergency 9-1-1 Business Offices (925) 673-7350 Mon-Fri 9:00am-5:00pm Air Pollution Bay Area Air Quality Management District (415) 771-6000 Illegal burns (Contra Costa County Fire Protection District) (925) 941-3330 Business Greater Concord Chamber of Commerce 2280 Diamond Blvd., Suite 200, Concord, CA 94520 (925) 685-1181 Better Business Bureau, 510-16th, Oakland (510) 238-1000 Business License (925) 671-3313 Courts Concord Superior Court 2970 Willow Pass Rd, Concord, CA 94519 Office Hours: Mon. - Fri. 8:00 a.m. to 3:00 p.m. Traffic citations (925) 646-5404 Small claims (925) 646-5410 Civil Division (925) 646-5410 Fire Contra Costa Fire Protection District Administrative Offices (925) 941-3300 Fire Chief (925) 941-3300 Community Events (925) 941-3327 Fire Permits (925) 941-3671 Licenses & Permits Birth certificates (925) 646-2365 Birth certificates (younger than three months) (925) 646-2516 Death Certificates (925) 646-2365 Marriage licenses (822 Main St., Martinez) (925) 646-2956 7
Resident Services Electricity Pacific Gas and Electric 1-800-743-5000 Electrical Outages 1-800-743-5002 Telephone (Local Service) AT&T (powered by SBC) 1-800-310-2355 AT&T Disconnect or Transfer Service 1-800-288-2020 Garbage Collection Valley Waste Management (Recycling) (925) 935-8900 Allied Waste Management (925) 685-4711 Hazardous Waste Disposal 1-800-646-1431 Water Contra Costa Water District (925) 688-8044 1331 Concord Ave, Concord, CA 94520 Central Contra Costa Sanitary District (Sewer) (925) 228-9500 Cable TV Comcast 1-800 945-2288 DMV Department of Motor Vehicles (DMV) Concord office, 2070 Diamond Blvd, Concord 1-800-777-0133 Post Office Clayton 6150 Center ST, 1-800 ASK-USPS or (M-F, 9:00 a.m. 5:00 p.m.; Sat., 10:00 a.m. 2:00 p.m) (925) 672-4337 8
Resident Services Newspaper Contra Costa Times (925) 935-2525 San Francisco Chronicle 1-800 281-2476 Library Clayton Branch 6125 Clayton Road (925) 673-0659 Mon & Wed, 1:00 p.m. to 9:00 p.m.; Tue & Thu & Sat 10 a.m. to 6:00 p.m.; Fri & Sun, closed Donation Stations Goodwill Industries Donation Station (510) 698-7200 or 3495 Clayton Rd, Concord, CA 94519 (925) 676-8140 Recycling Safeway 5431 Clayton Rd, All Clean Polyethylene Volunteer Information The Volunteer Center (925) 472-5760 2401 Shadelands Dr. Suite 112, Walnut Creek 9
Hospitals Medical Facilities & Hospitals EMERGENCY 9-1-1 Kaiser Permanente Medical Center (925) 295-4000 1425 S. Main St., Walnut Creek John Muir Medical Center (925) 939-3000 1601 Ygnacio Valley Rd, Walnut Creek Physician referral (925) 947-5380 Mt Diablo Medical Center (925) 682-8200 2222 East St, Concord, CA 94517 Clayton Valley Medical Group (925) 672-6744 1520 Kirker Pass Rd # A, Concord Family Practice (925) 672-6744 1520 Kirker Pass Rd # A, Public Health (general information) (925) 313-6710 Contra Costa Health Services, Sexually Transmitted Disease Information (925) 313-6750 Battered Women & Domestic Violence 1-888 215-5555 Family Crisis 24-hour line 1-800 833-2900 10
Places Of Worship Clayton Community Church 6055 Main St (925) 673-9060 Clayton Valley Presbyterian Church 1578 Kirker Pass Rd (925) 672-4848 St John's Episcopal Church 5555 Clayton Rd (925) 672-8855 Church of Jesus Christ of Latter-Day Saints 1360 Alberta Way Concord, CA 94518 (925) 687-3312 Crossroads Covenant Church 5353 Concord Blvd Concord, CA 94521 (925) 798-5905 Congregation B'nai Shalom 74 Eckley Ln Walnut Creek, CA 94596 (925) 934-9446 Holy Cross Lutheran Church 1092 Alberta Way Concord, CA 94521 (925) 686-2000 St Bonaventure's Church 5562 Clayton Rd Concord, CA 94521 (925) 672-5800 Concord United Methodist 1645 West St Concord, CA 94521 (925) 685-5260 11
Parks City of Clayton Maintenance Department 6000 Heritage Trail (925) 673-7327 From North Valley Park nestled in the upper hills of Oakhurst to Lydia Lane Park on the Cardinet Oaks Trail to the flagship Clayton Community Park perched on a hill overlooking the city, the City of Clayton has six parks for the community to enjoy. Clayton Community Park Clayton Community Park is located off Regency Drive, behind Diablo View Middle School. Lydia Lane Park Lydia Lane Park is located at the northeast end of Lydia Lane off of Clayton Road. North Valley Park North Valley Park is located on Keller Ridge Drive. Equestrian Staging Area Equestrian Staging Area is located on the east side of Clayton Road just past Peacock Creek. Westwood Park Westwood Park is located at the end of Haviland Place, off of Clayton Road. The Dog Park The Dog Park is located adjacent to Marsh Creek Road, north of Regency Drive, across from the Community Park. East Bay Regional Park District 2950 Peralta Oaks Court P.O. Box 5381 Oakland, CA 94605 (510) 562-PARK 12
Golf Courses Private Oakhurst Country Club (925) 672-9739 1001 Peacock Creek Dr 1 mile from center of Clayton Diablo Country Club (925) 837-9233 1700 Clubhouse Rd Diablo, CA 94528 7 miles from center of Clayton Blackhawk Country Club (925) 736-6550 599 Blackhawk Club Dr Danville, CA 94506 8 miles from center of Clayton Rossmoor Golf Course (925) 933-2607 1010 Stanley Dollar Dr Walnut Creek, CA 94595 9 miles from center of Clayton Round Hill Golf & Country Club (925) 934-8211 3169 Round Hill Rd Alamo, CA 94507 7 miles from center of Clayton Contra Costa Country Club (925) 685-8288 801 Golf Club Rd Pleasant Hill, CA 94523 9 miles from center of Clayton Crow Canyon Country Club (925) 735-5700 711 Silver Lake Dr Danville, CA 94526 10 miles from center of Clayton Boundary Oak (925) 934-6212 3800 Valley Vista Rd Walnut Creek, CA 94598 4 miles from center of Clayton Lone Tree Golf Course (925) 706-4220 4800 Golf Course Rd Antioch, CA 94531 7 miles from center of Clayton Roddy Ranch Golf Club (925) 978-4653 1 Tour Way Antioch, CA 94531 7 miles from center of Clayton Buchanan Fields Golf Course (925) 682-1846 1091 Concord Ave Concord, CA 94520 8 miles from center of Clayton Public Pittsburg's Delta View Golf Course (925) 439-4048 2232 Golf Club Rd Pittsburg, CA 94565 6 miles from center of Clayton Diablo Hills Golf Course (925) 939-7372 1551 Marchbanks Dr Walnut Creek, CA 94598 7 miles from center of Clayton Diablo Creek Golf Course (925) 686-6262 4050 Port Chicago Hwy Concord, CA 94520 8 miles from center of Clayton Shadow Lakes Golf Club (925) 516-2837 401 W Country Club Dr Brentwood, CA 94513 9 miles from center of Clayton 13
Transportation The County Connection (Central Contra Costa Transit Authority, or CCCTA) provides transit service within central Contra Costa County with connections to Pleasanton and Antioch. The County Connection serves Clayton, Concord, Danville, Lafayette, Martinez, Moraga, Orinda, Pleasant Hill, San Ramon, Walnut Creek, and unincorporated areas of central county. BART (925) 676-2278 TRANSIT Bay Area Rapid Transit District (BART - Bay Area provider of rapid transit serving 9 counties) County Connection (925) 676-7500 Amtrak 1-800-USA-RAIL Travel Information (925) 817-1717 (Bay Area Real Time Traffic Information Line) Airports Oakland International Airport (510) 563-3300 San Francisco Airport (650) 821-8211 San Jose Airport (408) 277-4759 14
Baby Care/Day Care Contra Costa Child-Care Council Child Care Resources (925) 676-KIDS Trustline; background checks on childcare providers exempt from licensing 1-800 822-8490 Children's Center Clayton Valley (925) 672-0882 1578 Kirker Pass Rd Children's World Learning Center (925) 672-9370 6095 Main St Clayton Children's Center (925) 672-0717 6760 Marsh Creek Rd Clayton Community School (925) 672-0388 5880 Mount Zion Dr Clayton Hills Child Care Center (925) 672-5217 80 El Portal Dr Clayton Valley Presbyterian Church (925) 672-4848 1578 Kirker Pass Rd Wee Three Bears Play Center (925) 672-5214 411 Wright CT 15
Senior Services Senior Services & Assistance Senior Information and Referral 1-800 510-2020 Retirement Communities Diamond Terrace (925) 524-5100 6401 Center Street Nestled in the small, charming town of Clayton is the friendliest Retirement Community in the Bay Area. Country living with all the conveniences of city life. Spectacular views of Mt. Diablo, affordable 1 and 2 bedroom residences. Fill your life with new friends, great food and activities. We ll handle your transportation, housekeeping, and maintenance needs. Our active residents will tell you we are the best choice and value for independent seniors! Call us we d love to have you be our guest for a tour and complimentary lunch today. Petar Guest Home (925) 672-2841 33 Petar Ct Clayton, CA 16
Pet Services Unwanted or stray animals County Animal Control (925) 335-8300 4800 Imhoff Place, Martinez (Well-lit, 24-hour depository) Dog licenses (925) 335-8310 County Animal Shelter, Martinez Injured wild animal (925) 935-1978 Lindsay Museum 1931 First Ave, Walnut Creek Lost and found pets (925) 335-8330 County Animal Shelter, Martinez Spay and neuter clinic (925) 335-8320 County Animal Shelter, Martinez Vicious animal (925) 335-8300 (During Daytime) Animal Hospitals Cat Hospital of Clayton (925) 672-2287 5435 Clayton Rd # I Moore's Mobile Veterinary Service (925) 672-8700 Clayton Valley Pet Hospital (925) 689-4600 4801 Clayton Rd Concord, CA 94521 Pet Stores & Pet Services Petco 1538 Kirker Pass Rd (925) 672-3273 TLC Pet Grooming 6078 Main St (925) 672-2547 17
Fun Stuff For Kids Concord / Clayton YMCA (925) 889-1600 700 Gym Court, The Concord/Clayton YMCA, Mt. Diablo Region's youngest YMCA branch, was established in January 2003 to better serve the Concord and Clayton communities. This program-based branch offers youth, teen and family programs including youth sports, teen leadership, after-school enrichment programs, childcare and more. Clayton Community Library (925) 673-0659 6125 Clayton Road, There s tons of fun for children of all ages going on at the Clayton Community Library. There is Patty Cakes; Story Time for babies to 3 years and if you have a 3 to 5 year old child you can attend Picture Book Time. The Clayton Community Library also offers Movies, Pajama Story Time - Story and Craft and Reading is Fun Book Club and much, much more. Visit the Clayton Community Library s webpage at www.claytonlibrary.org or call them at (925) 673-0659 Birthday Parties at the YMCA (925) 889-1600 Celebrate your child's birthday at the YMCA! Choose one of our fun themed parties and let us do the rest! We provide you with a party host who will lead games, crafts, and all sorts of birthday fun. Organizations California Youth Soccer Association (925) 426-5437 Mt. Diablo Soccer Assn. www.mdsoccer.org Boy Scouts of America / Mt. Diablo Silverado Council Desiree Odenbrett (925) 674-6123 Clayton Valley Athletic Association Youth Football and Cheerleading (925) 927-7377 Clayton Valley Little League cvll@value.net (925) 672-9467 Girl Scouts of San Francisco Bay Area Diablo Shadows Nicole Wilson (510) 562-8470 x163 CYO Basketball League info@eastdiablocyo.com Dana Hills Swim Team Kathy Williams (925) 673-1584 18
PLACES TO EAT Bakery & Café American & Fine Dining Club at Oakhurst 1001 Peacock Creek Dr (925) 672-2472 Country Waffles 5435 Clayton Rd # B (925) 673-0943 Ed's Mudville Grill 6200 Center St # D (925) 673-0333 La Veranda Cafe 6201 Center St (925) 524-0011 Elysium Restaurant 6115 Main St (925) 672-1333 BBQ J J Hawaiian BBQ 5435 Clayton Rd (925) 673-8686 Fast Food Carl's Jr 1530 Kirker Pass Rd (925) 672-9324 Subway Sandwiches & Salads 1536 Kirker Pass Rd (925) 524-9500 Ice Cream Cold Stone Creamery 1536 Kirker Pass Rd (925) 524-1600 Sweet Bakery 5435 Clayton Rd (925) 672-0936 Clayton Cup-O-Jo 6054 Main St (925) 675-5105 Starbucks 1538 Kirker Pass Rd (925) 672-8919 Mexican Casa Gourmet Burritos 5435 Clayton Rd (925) 673-0908 Pizza Papa Murphy's Take 'n' Bake 5433 Clayton Rd # H (925) 672-5335 Skipolini's Pizza 1033 Diablo St (925) 672-1111 19
Shopping Shopping Centers Downtown Clayton Historic Downtown Clayton boasts a variety of dining establishments and quaint shops. Clayton Station 5401 Clayton Rd, Clayton, CA Clayton Valley Shopping Center 5400 Ygnacio Valley Rd, Concord For Your Home - Shops Donna's Gifts 5420 Ygnacio Valley Rd # 40 Concord, CA 94521 (925) 672-2440 Safeway 5431 Clayton Rd (925) 672-2135 Walgreens 5437 Clayton Rd (925) 672-1334 Courtyard Florist 6064 Main St (925) 672-3905 Clayton Valley Pumpkin Farm & Christmas Trees 1060 Pine Lane (925) 672-5198 Accent Sprinkler Repair Clayton, CA (925) 672-5554 General Gardening & Landscape Po Box 481 (925) 200-3697 R & M Pool Patio & Gardens 6780 Marsh Creek Rd (925) 672-0207 20
Sightseeing Historic Downtown Clayton Clayton has preserved its Old West heritage within its historic downtown area. The area boasts several historic buildings. The newly renovated DeMartini Winery (built in 1885), is being used as the new City Hall and won the 1998 Governor's Historic Preservation Award and the 1998 California Preservation Foundation Design Award for Historic Preservation. Other historic buildings include the Clayton Historical Museum and the original City Hall and Post Office buildings now occupied by local businesses. Future renovation of the historic Endeavor Hall and Keller House are planned. Clayton Historical Society 6101 Main St. Clayton, CA, 94517 The Clayton Historical Society was founded in 1974 to "research, collect, record, preserve, display, borrow, share, and interpret local history information and memorabilia, and to promote understanding of Clayton origins and development." Its volunteers finance, maintain and operate the non-profit Clayton Historical Museum as the major local history resource for students, writers, genealogical researchers, city and county needs, developers, businesses, new residents, and visitors including many from other states and countries. It locates, records, inventories, publicizes and marks historic sites, buildings and natural features making recommendations. In addition to maintaining regular museum hours, the Society hosts student classes and special tours and opens the Museum upon request. The Society has developed a "twinning" bond with Joel Clayton's birth town, Bugsworth, England, and the town he founded. Oakhurst Country Club (925) 672-9739 1001 Peacock Creek Dr, Tucked against the foothills, the Ron-Fream designed course provides challenging play and breathtaking views of the surrounding countryside. From lateral hazards to daunting doglegs and roughs, the layout challenges players of all skill levels. The Oakhurst lifestyle is about golf and so much more. When not on the course you can workout in the fitness facility, serve up a game of tennis or unwind by the pool. Walking and Hiking Clayton had the honor of receiving Walking Magazine's 1998 award as one of the five most walkable small cities in America. Clayton has approximately 400 acres of open space and affords a variety of recreational activities in the area including horseback riding, water skiing, swimming, tennis, and championship golf. In addition, Clayton is adjacent to Mt. Diablo State Park. There are 17 miles of walking and hiking trails within the Clayton Trail System. The Trail System connects to East Bay Regional Park District's Black Diamond, Bruce Lee and Back Canyon Trails. The Trail System is also part of the statewide Coast-to-Coast Trail, and ties into the American Discovery Trail which goes from Point Reyes on the Pacific Coast to Delaware Bay on the Atlantic Coast. 21
Schools Mt. Diablo Unified School District 1936 Carlotta Drive Concord, CA 94519 (925) 682-8000 Elementary School Mt. Diablo Elementary School (925) 672-4840 5880 Mt. Zion Dr, Clayton Middle School Diablo View Middle School (925) 672-0898 300 Diablo View Ln, Clayton High School Clayton Valley High School (925) 682-7474 1101 Alberta Wy, Concord 22
School Scores Academic Performance Index Academic Performance Index (API) is the state s method of combining test scores across all subjects and grade levels. The API is a numeric scale that ranges from a low 200 to a high of 1000. The API is a way of comparing schools based on students test scores. The index was created in 1998 to help parents and educators better understand how schools were doing. Elementary School API Score in 2005 Change from Prior year County Average State Average Mt. Diablo Elementary 884 +12 830 752 Middle Schools API Score in 2005 Change from Prior year County Average State Average Diablo View Middle School 853 +28 768 716 High Schools API Score in 2005 Change from Prior year County Average State Average Clayton Valley High 701 +15 733 696 23