In 1987 the SEI began a search for a well-documented ADA system, developed under government contract, that could be used in software engineering education. The APSE Interactive Monitor (AIM) was determined to be appropriate for this purpose. This system acts as an interface between a user of an ADA programming support environment (APSE) and the programs that the user executes in the APSE. It provides facilities to support the concurrent execution of multiple interactive programs, each of which has access to a virtual terminal. Educational uses of the system are described, including use as a case study and as the basis for exercises. Software engineering topics that can be taught with the system include software maintenance, configuration management, software documentation, cost estimation, and object-oriented design.