Adaptive Evaluation Structure (AES) is a set of linked computer programs designed to increase the effectiveness of interactive computer-assisted instruction at the college level. The package has four major features, the first of which is based on a prior cognitive inventory and on the accuracy and pace of student responses. AES adjusts materials presented to the student by using a branching process through a three-dimensional matrix of instructional blocks for each of four learning tasks. There are three levels of difficulty for each of the three dimensions--task complexity, degree of abstraction, and the extent of comparative analysis required. A second feature is that AES maps the path taken by each student through each task, records the time required as well as the number and matrix location of each appropriate and inappropriate response. Another feature of AES is that other student performance indicators can be stored for comparison with AES performance. A fourth feature is AES's ability to generate statistics on aggregate class use of and performance on each block. AES has been implemented with an instructional package called Comparative Study of Political Elites (COMPELITE), but is designed to be generalizable. It is written in BASIC V for PRIME minicomputers, and has been tested in one undergraduate political science course at the University of Iowa. (Author/FG)