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Contra Costa Adult School is fully accredited by the Western Association of Schools and Colleges. Contra Costa Adult School campuses are located in Contra Costa County’s three detention facilities. Our mission is to facilitate successful transitions of adult learners by providing life-changing education and personal development. Courses include but are not limited to Adult Basic Education, High School Diploma, High School Equivalency Testing (HiSET), GED practice testing, Deciding Education Understanding Counseling Evaluation (DEUCE), Commitment to Change, and English Second Language (ESL). Contra Costa Adult School offers pre apprenticeship certification recognized by North American Building Trades Unions, TradesFutures for Multi Craft Core Curriculum (MC3).  
 
Marsh Creek Detention Facility ­– Clayton
Martinez Detention Facility – Martinez
West County Detention Facility – Richmond
 
A man wearing a graduation cap and gown. Congratulations Graduate!
 

2025-2026 School Calendar | Contra Costa Adult School Catalog 2025-2026

 

Transcript Request for Former Students

If you are a former student of Contra Costa Adult School and wish to request a copy of your transcript or academic records, please complete the Transcript Request Form. Once completed, email the form along with a copy of your current government-issued photo ID (e.g., driver’s license or state ID) to our Transcript Analyst, Niki Grimshaw, at ngrimshaw@cccoe.k12.ca.us.
 
Please allow up to 5 business days for processing.
 
CONTACTS

CONTACTS

Title Phone
Contra Costa Adult School (510) 262-4340
Principal (510) 262-4341
Administrative Assistant (510) 262-4342
See Email Contact Information Below  
 
 
NEWSLETTER

NEWSLETTER

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