Many OTA courses include lecture and lab components. Total clock hours of lecture time are based on 55 minutes of classroom instruction per credit hour per 14 weeks (one trimester). Total clock hours of lab time are based on two to three hours of lab instruction per credit hour per 14 weeks. Practicum courses are based on four to five hours of clinical instruction/experience per credit hour per 14 weeks. Supervised Clinical Practice courses are based on 80 hours of clinical instruction/experience per credit hour per eight weeks. Lecture/lab courses and the corresponding practicum courses must both be satisfactorily completed in order to progress in the Occupational Therapy Assistant Program.