Course evaluation is necessary means to ensure the improvement of course construction level. A new course evaluation model is proposed based on the fractional order systems in this paper. An algorithm for linear fractional order systems founded on Grunwald–Letnikov’s fractional calculus definition is described. The fractional evaluation model is composed of fractional order and common coefficient. Model parameters can be determined by a large number of data and mathematical statistics method. The proposed model was applied to actual course evaluation work of Capital Normal University Information Engineering College. The practicability and effectiveness of the method have been validated.