The test to earn your HSE is now the HiSET. You must register online at www.hiset.org or call 1-855-694-4738. Costs are $50 for all five tests or $15 for each subtest which must be paid online or on the phone. There are also test center fees that are due on the day you take your test. These are $15 for all 5 tests, $2 for an individual test, or $6 for a retest.