49. The article of manufacture according to claim 48, further comprising: said computer-readable program code means for adjusting the difficulty level of the test presented by said computer-readable program code means for presenting by adjusting the duration of the show interval if the interactive process is the show only process or the show and say process; said computer-readable program code means for calculating student performance based on the duration of the show interval, an average percent correct of all past student responses recorded by said computer-readable program code means for recording, the difficulty level of the interactive process presented by said computer-readable program code means for presenting, and the response time measured by said computer-readable program code means for measuring.
51. The article of manufacture according to claim 49, said computer-readable program code means for adjusting the duration of the show interval adjusting the duration of the show interval based on the student performance and/or student age.