Most Special Education courses are offered once a year. The exception is SPD 160 Foundations of Special Education which is offered every fall and spring and often in the summer. Check the Special Education K-12 program of study for the appropriate semester offerings.
All other undergraduate courses are offered every fall and spring semester.
This document lists the course rotations for all of the graduate programs in the School of Education and Counseling (CSL, EDU, and SPD prefixes).