The use of microworlds (MWs), or complex dynamic systems, in educational testing and personnel selection is hampered by systematic measurement errors because these new and innovative item formats are not adequately controlled for their difficulty. This empirical study introduces a way to operationalize an MW's difficulty and demonstrates the…

Reports on a program developed in Indiana public schools to hold software evaluation workshops that would compare teacher and student evaluations of the same software. The evaluation process is discussed; tutorials, drill and practice programs, simulations, and games are examined; and tests for correlation are described. (21 references) (LRW)