Regarding the relationship between financial aid and tuition, the models found no associations between most of the aid variables (federal grants, state grants, and student loans) and changes in tuition in either the public or private not-for-profit sectors. The single exception is institutional aid, which was found to have a positive association with tuition increases for public comprehensive and private not-for-profit comprehensive institutions. The correlation between the change in tuition and the institutional aid variable was 0.103 at public comprehensive institutions and 0.188 at private not-for-profit comprehensive institutions, both of these small sized relationships.