No fixed formula has been found to ensure the success of these programs. We
believe that only through continuous evaluation of existing programs, and through the
appropriate interpretation and analysis of emerging data that this endeavor can be
reached. This is the role of any program-evaluation research: “. . . an evaluation pays
off to the extent that it offers ideas pertinent to pending actions and people think more
clearly as a result.” (Cronbach and Associates, 1980, pp. 656).