This dissertation is a collection of three essays in applied microeconomics. In the first essay, I study the enrollment effects of Tennessee Promise, a state-funded financial aid program in the two-year college sector. I document a substantial response in full-time first-time enrollment and some degree of substitutability between the unsubsidized and subsidized college sectors following the inception of the Tennessee Promise program. The second essay takes initial steps to examine the broader implications of free college. I first use institution-level data to construct three metrics of diversity, namely the share of underrepresented minorities in the student body, Simpson’s index, and Shannon’s index. I then leverage the staggered timing of...