HiSET provides free practice tests to the public. Additional printable practice subtests can be purchased for $7.50 each as of 2015. A free downloadable study companion is available with information on the test format, its content and additional study resources.
Five subtests make up the exam: reading, writing, mathematics, science and social studies. Each practice subtest is 30 to 45 minutes, half the length of the actual test, and contains directions and an answer key. HiSET provides a tutorial video to familiarize users with the exam's electronic delivery. The practice test and study resource files are compatible with screen readers.