The results for departments with a small number of students should be viewed with caution. The 1991-92 data were reported by James Kormier when he was the WEPT coordinator.
Most departments show an increase in the passing rate for their majors.
Perhaps the best use of these data would be as the basis for a discussion by the faculty in the departments who may be able to interpret the shift for their students during these years. The implication for pedagogy would also best be addressed by the department faculty.