Although Just-in-Time Teaching makes heavy use of the web, it is not to be confused with either distance learning (DL) or with computer-aided instruction (CAI). Virtually all JiTT instruction occurs in a classroom with human instructors. The web materials, added as a pedagogical resource, act primarily as a communication tool and secondarily as content provider and organizer. JiTT is also not an attempt to 'process' large numbers of students by employing computers to do massive grading jobs.