textThis dissertation is a collection of three studies in the field of higher education. Chapter 2 evaluates the higher education tax benefits which began in 1998. This study analyzes whether the tax treatment has caused changes in the enrollment behavior among those eligible. It explores the effects on full time and part time enrollment and the effects of the rule changes in 2002 and 2003, as well as examines how marginal changes in the tax benefits affect the probability of enrollment. There is an increase in overall enrollment which can be attributed to the tax benefits, although the expansion of the program had very small effects and there were very few changes in full time student status due to the program. The second essay exami...