Enrollment and statistics
Founded in 1972 as SPEA, the O’Neill School of Public and Environmental Affairs is a world leader in public and environmental affairs and the largest school of public administration and public policy in the United States, boasting an alumni network of more than 37,000.
2638UNDERGRADUATE TOTAL ENROLLMENT IN FALL 2025
531MASTERS TOTAL ENROLLMENT IN FALL 2025
70DOCTORAL TOTAL ENROLLMENT IN FALL 2024
| Degree and major (asof fall 2025) | Number enrolled |
| Bachelor of Science in Arts Management | 80 |
| Bachelor of Science in Environmental Science | 119 |
| Bachelor of Science in Healthcare Management & Policy | 269 |
| Bachelor of Science in Public Affairs | 2,005 |
| Bachelor of Arts in Environmental and Sustainability Studies | 165 |
- SAT: 1275
- GPA: 3.98
Mean SAT and median GPA for the fall 2025 incoming Direct Admit class
As of fall 2025
| Program | Number enrolled** |
| MPA (residential) | 145 |
| MPA (online through O'Neill Online) | 112 |
| MPP | 3 |
| MES (residential) | 29 |
| MES (online) | 13 |
| MSES | 34 |
| MPA-MSES | 62 |
| MSHM (residential) | 16 |
| MSHM (online) | 23 |
| MIA | 17 |
| MPA-MIA | 26 |
| MAAA | 32 |
| MAAA-MPA | 7 |
| Graduate Certificates (residential) | 3 |
| Graduate Certificates (online through O'Neill Online) | 9 |
**may include dual degrees
As of fall 2025
| Program | Initially enrolled | Graduated within 2 years | Graduated within 3 years | Graduated within 4 years | Total Students Graduated and Persisting to Graduation |
| Residential MPA | |||||
| Number of MPA students* | 144 | 73 | 121 | 133 | 137 |
| O'Neill Online MPA | |||||
| Number of MPA students ** | 43 | 3 | 13 | 29 | 32 |
*This data is based on the residential MPA cohort that began during academic year 2019-20.
** Many students complete the online MPA program part-time.