The GED® tests are created and administered by the GED Testing Service (GEDTS).
Their website-- https://ged.com/ --has a wealth of information about the tests and how to prepare for them.
Useful sections of the website are listed and explained below.
Choose About the test from the main menu of the GED website. Explore information about each of the four tests--Math, Science, Social Studies, and Reasoning Through Language Arts.
Choose Study on the GED website home page.
Choose Test Previews.
One free test preview/sample test for each subject is provided. These free mini-tests:
Ask your instructor for a handout to go with each test preview. These handouts will help you keep track of any wrong answers and provide information about the skills you may need to practice.
The GED Testing Service supplies an online calculator. It is useful for the Math, Social Studies, and Science tests. Learn how to use the online calculator here:
https://ged.com/about_test/test_subjects/language_arts/extended_response/
Ask your instructor for additional materials that can help you practice writing the essay.
GED charges a $6 fee (discounts sometimes available) for these tests, payable with a credit card or a Prepaid Visa Card (available from places like Target). Financial assistance from the Hubbs Center may be available for practice tests (see instructor).
These OFFICIAL practice tests:
DIRECTIONS
DIRECTIONS FOR VIEWING YOUR SCORE REPORT
The GED® tests may be taken at a GED Testing Site only. You must schedule your test online on the GED Testing Service website and pay for it with a credit or debit card. Prepaid Visa cards (available from Target, etc.) work as well.
The Hubbs Center is an official testing site and has a GED Testing Room (not the classroom). If you choose the Hubbs Center as your testing site, you will take the test in the GED Testing Room at your scheduled time. DO NOT BE LATE. Your money will not be refunded if you are late.
To schedule a test, log into your GED account, choose Schedule a Test, and follow the instructions.