A comprehensive plan for the evaluation of new curriculums and instructional procedures stresses the observation of activities in which pupils are engaged while the instructional program is in operation. Through the Individually Prescribed Instruction Project conducted at the University of Pittsburgh, it was found that all observable pupil activities could be listed under five major categories: (1) Independent work, (2) teacher-pupil activity, (3) noninstructional activity, (4) pupil-pupil activity, and (5) group activity. Use of a checklist incorporating these categories to report pupil activities can contribute in three ways to the meaningful evaluation of an instructional innovation. First, it helps to develop or refine the innovation. Second, it facilitates the defining or detailed description of the innovation. And third, it assists the implementation of the innovation in additional schools or settings. (JK)