This paper presents learners' task results gathered by means of an example task-oriented environment for knowledge testing and processed by EXCEL. The processing is domain- and task-independent and includes automatic calculation of several important task and session's parameters, drawing specific graphics, generating tables, and analyzing the correlation coefficient. The intention is to design and implement a specialized tool called postprocessor for support of a common task base, learner's model and decision making of the author and teacher by means of an environment for individually planned teaching courseware.