Throughout the program, APEX gives participants access to downloadable artifacts that may be adapted for use in a variety of school contexts. APEX assignments are created to simulate on-the-job tasks, allowing participants to build a portfolio of references to use now or in the future. The readings for each course vary, but in general, participants purchase two-to-three texts to complete the required reading assignments.​

Most courses are four to six weeks in length, and participants may take stand-alone courses or progress through a systematic scope and sequence. Each course features mostly asynchronous content through an online learning management system, as well as up to four synchronous online discussions.

Course fees are typically $250 per course for non-Great Hearts participants. Great Hearts employees may enroll free of charge. Participants need to purchase the course books, which will add between $15 and $80 to the course expense. Courses usually provide 12-16 hours of activity over a four-to-six week period. At least one year of teaching experience as a full-time classroom teacher is required to enroll in courses.