An Executive M.P.H. class enters each September. Participants attend classes as a cohort. Program sessions are held one long weekend each month, Thursday through Sunday, from 9 A.M. to 5 P.M. When classes are not in session, students communicate with each other, the program staff and faculty via electronic mail. Participants should expect to devote at least ten to fifteen hours per week to individual study in preparation for each monthly program.