The LSAT is offered once a month, with registration deadlines approximately a month before the exam date. Once registered, you will take the LSAT on your assigned test date, usually starting at 8:30 a.m. The test takes three and a half hours. Regardless of the date on which you took your test, you will receive your LSAT score along with everyone else who took it in the same month, usually within the last week of the month.