How to prepare It takes seven hours to write the GED® tests. Here are some suggestions and tips on how you can prepare for the big day. Study and test tips Learn how to study and prepare for GED®, how to stay calm during the tests, and how to approach the different types of questions. Test overview Get a sneak peek at the five GED® tests, including sample questions for each. What to expect on test day GED® testing is divided into two days, usually a Friday evening and all day Saturday. Find out more about the testing procedure and what you need to bring.