A bar review is a series of classes that most law school graduates in the United States attend prior to taking a bar examination, in order to prepare for that exam. A typical bar review course will last for several weeks, beginning a few weeks after law school graduation and running until a few weeks before the next administration of the bar examination. "A full service bar review course prepares a student for both portions of a state's bar examination: multistate and state law. A supplemental bar review course prepares a student for only one portion of a state's bar examination". Classes may be held in person, online, or with prerecorded material delivered to the student.