Sequence Requirements Courses in the online, part-time, Post-Professional Clinical Certificates and Credentialed APTA Residency programs are intended to be taken in a prescribed sequence. It is important for students to recognize that the Post-Professional Clinical Certificate program is not just a series of courses but instead a professional preparation for specialty practice in which appropriate sequence is critical for assuring intended educational outcomes. There are no course transfers or waiver of courses in the Post-Professional Clinical Certificate and Credentialed APTA Residency programs.