Breadcrumb Home Occupational Therapy Assistant (OTHA) OTHA 2266 OTHA 2266: Practicum- Occupational Therapy Assistant-Level II Download as PDF Class Program Occupational Therapy Assistant (OTHA) Credits 2 Lecture Hours 0 Lab Hours 0 Clinical Hours 20 CIP 51.0803 Practical, general workplace training supported by an individualized learning plan developed by the employer, college, and student. Three hundred, twenty clinical hours. Prerequisites OTHA 1167, OTHA 1319, OTHA 1341 and OTHA 2309.