Contra Costa Adult School
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

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![]()
CONTACTS
Title | Phone |
Contra Costa Adult School | (510) 262-4340 |
Principal | (510) 262-4341 |
Administrative Assistant | (510) 262-4342 |
See Email Contact Information Below |
Archive: Good News - Let's Connect
Archive: Good News - Let's Connect![]()
Archive: Good News - Let's Connect