Bending the Curve: Institutional Factors Associated with Graduation Rates

Area of Science:

• Higher Education Research
• Educational Policy Analysis
• Institutional Effectiveness

Background:

• Low college graduation rates have been a persistent concern for educators and policymakers.
• Previous analyses often overlooked institutional and student characteristics when evaluating graduation rate trends.

Purpose of the Study:

• To assess changes in four-year college graduation rates from 2008 to 2018, controlling for key institutional and student factors.
• To identify the drivers of graduation rate improvements or declines across different sectors of higher education.
• To develop a more accurate metric for evaluating institutional performance in student completion.

Main Methods:

• Analysis of a decade of Integrated Postsecondary Education Data System (IPEDS) data for U.S. four-year colleges.
• Application of pooled cross-sectional, Prais-Winsten, and college fixed-effect models.
• Development of a 'Bending the Curve' metric to predict and compare expected versus actual graduation rates.

Main Results:

• Public colleges showed substantial graduation rate improvements, private not-for-profits showed modest gains, and for-profit institutions experienced a decline.
• Student body composition and instructional expenditures were key factors explaining variations in graduation rates over time.
• Unadjusted graduation rates are insufficient indicators of institutional effectiveness.

Conclusions:

• Higher education institutions have demonstrated varying success in improving graduation rates, influenced by student demographics and financial investments.
• The 'Bending the Curve' metric offers a more nuanced evaluation of college performance than unadjusted rates.
• Policy and investment strategies should consider compositional factors to effectively enhance student graduation outcomes.