Rocklin High School offers four theatre classes: Theatre I is an introductory theatre course. Theatre II/III is an intermediate, two-year course with a curriculum that alternates every other year. Theatre IV is the advanced theatre class. Technical theatre focuses on the "behind-the-scenes" aspect of theatre, including set building. Traditionally, three theatrical productions are performed each year: the Fall Play, the Winter Musical, and the Spring Comedy. The Theatre IV class participates in the Lenaea Festival at California State University, Sacramento. Cindy Toepke has taught the classes since the school first opened.