In this article, you can discover all GED preparatory facilities and test centers in the Antioch area. California uses two options for high school equivalency testing: the GED and HiSET exams.
The GED and HiSET exams are also available in an online proctored format. Read more about online testing below at the bottom of this page.
Onsego GED Prep
Pass the GED Test in 2 Months
Learn Just 1 Hour a Day.
It doesn’t matter when you left school.
The exams give adults who didn’t finish high school another shot at securing an equivalent credential.
We provide free GED online classes that help you get started quickly and learn if working with online instruction suits you well.
If online learning is right for you, we recommend you continue with Onsego GED Prep, an affordable course rated fully GED-aligned by GED Testing Service.
Online GED Classes
A simple and easy way of getting your GED diploma.
If you prefer to learn for your GED with an instructor, contact one of the sites listed below on this page.
For more information about GED and HiSET testing fees in California, qualification requirements, and so forth, visit this page.
Antioch GED Prep Facilities
Antioch Adult Education (@Prospects High School)
820 W Second Street – Antioch – CA 94509 – Ph: (925) 779.7490
Free and self-paced GED classes are offered Monday-Friday at multiple times to match every schedule. Registration is ongoing, and orientation sessions are offered every week. The school is conveniently located on the Tri Delta bus lines.
Delta Learning Center
275 W Tregallas Road – Antioch – CA 94509 – Ph: (925) 757.1310
Delta Learning Center offers tutoring. It is located across the street from the Antioch Post Office.
Opportunity Junction
3102 Delta Fair Boulevard – Antioch – CA 94509 – Ph: (925) 776.1133
Provides English as a Second Language (ESL) classes, basic computer classes, and typing test certification at no cost.
Prep Sites around Antioch (Cities by Alphabet)
Liberty Adult Community Education Center
929 Second Street – Brentwood – CA 94513 – Ph: (925) 634.2565
Sylvan Brentwood
11726 San Vicente Boulevard – Suite 220 – Brentwood – CA 90049 – Ph: (310) 597.4491
Loma Vista Adult Education Center (Mount Diablo Adult Ed.)
1266 S. Carlos Avenue – Concord – California 94518 – Ph: (925) 685-7340
Check out all Concord area GED prep options <- on this page
Pittsburg Adult Basic Education
1151 Stoneman Avenue – Pittsburg – CA 94565 – Ph: (925) 473.2400 ext. 4963/4966
Wind River Adult Education (@D.H. White Elementary School)
500 Elm Way – Rio Vista – CA 94571 – Ph: (707) 374.1719
High School Diploma Program
Stockton School for Adults Basic Education
1525 Pacific Avenue – Stockton – CA 95204 – Ph: (209) 933-7455
You can discover all Stockton area GED prep sites <- here
To learn if you qualify for the high school equivalency (HSE) program, take a look at the page: GED testing in California.
The Four GED Sub-exams
The GED exam has four independent subtests (modules) in the academic fields of
- Science
- Social Studies
- Math
- English Language
You have the option to sit for one subtest of the GED or HiSET exam at a time and in your preferred order.
The HiSET exam has separate reading and writing subtests, so five overall.
The GED is entirely computer-formatted, whereas the HiSET is offered on paper and on a computer.
Testing takes place at a level that’s similar to what high school seniors are expected to command upon graduation.
Antioch Area GED Testing Facilities
Prospects High-GED, HiSET
820 W. 2nd Street, Antioch, CA 94509, 925-779-7490
Liberty Adult Education-GED, HiSET
929 Second Street, Brentwood, CA 94513, 925.634.2565
Mt. Diablo Adult School-GED & HiSET
1266 S. Carlos Avenue, Concord, CA 94518, 925.685.7340
Pittsburg Unified School District (GED)
1151 Stoneman Avenue, Pittsburg, CA 94565, 925.473.2400
Contra Costa County Office of Education (GED/HiSET)
77 Santa Barbara Road, Pleasant Hill, CA 94523, 925.942.5321
GED, HiSET
The state of California not only offers the GED program to its residents for their high school equivalency/proficiency testing. Californians (or, rather, the testing centers) have the option to choose between the GED and the HiSET testing programs, and some offer both options.
The HiSET exam offers both computer and paper-based testing and includes five testing sections (language arts is divided into separate reading and writing tests).
This way, the state offers more second chances to help students who never completed high school in their efforts to get back on track by earning a secondary education credential that leads to the High School Equivalency Diploma.
Adults of all ages have the opportunity to pursue a California Certificate of High School Equivalency, a credential issued by the State of California to students who pass the HiSET or GED exam.
Without a high school or equivalent diploma, adults will face many challenges in finding a job and supporting their families.
By preparing for the California HiSET or GED exam, they can work on their basic skills and knowledge and earn a diploma that allows them to build a bridge to a brighter future and remove barriers to decently paying and fulfilling employment.
Online GED and HiSET Tests
Taking the GED and HiSET exams online is possible as well. GED candidates who want to take the exam online need to score “green” on the official GED Ready test.
Each of the four GED modules has a corresponding GED Ready practice test, available on GED.com for $7.99 each. So, that will add another $32 to your overall GED testing costs.
For information about the online HiSET exam, go to Online HiSET Testing.
To learn all about the online GED exam, visit The Online GED Test.
Free GED Ready Vouchers
If you choose Onsego for your preparation, you will get four GED Ready tests for free if you learn with an Advantage Plan.
All Advantage Plans include four vouchers for the GED Ready test at no additional charge, a fine $32 bouns.
You can buy an Onsego Advantage Plan already for $79, and that includes the free vouchers, immediate unlimited access to all study materials, and a number of outstaning support programs, all at no extra cost.
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Last Updated on March 2, 2026.