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Grinnell College and William Penn University are both private nonprofit institutions — Grinnell College in Grinnell, IA and William Penn University in Oskaloosa, IA. This page compares published admission, cost, and outcome data from federal sources so you can see the tradeoffs before you add either school to your list.
Grinnell, IA · Private
Acceptance rate: 14.5%
Undergrad enrollment: 1,729
Tuition: $68,106/year
Student-faculty ratio: 9.0:1
Graduation rate: 88.1%
Top programs: Social sciences, Biological sciences, Computer science
Best for: Students who want a private campus in Grinnell, IA with published program strength in Social sciences and Biological sciences.
Oskaloosa, IA · Private
Acceptance rate: 51.9%
Undergrad enrollment: 1,301
Tuition: $29,750/year
Student-faculty ratio: 15.0:1
Graduation rate: 32.6%
Top programs: Education, Business and marketing, Psychology
Best for: Students who want a private campus in Oskaloosa, IA with published program strength in Education and Business and marketing.
| Factor | Grinnell College | William Penn University |
|---|---|---|
| Acceptance rate | 14.5% | 51.9% |
| SAT range (middle 50%) |
| 1410–1540 |
| 880–1110 |
| ACT range (middle 50%) | 31–34 | 16–22 |
| Undergraduate enrollment | 1,729 | 1,301 |
| Out-of-state tuition | $68,106/year | $29,750/year |
| Average net price after aid | $17,648 | $22,601 |
| Graduation rate | 88.1% | 32.6% |
| Median earnings (10 years) | $62,830 | $48,936 |
| Student-faculty ratio | 9.0:1 | 15.0:1 |
| Institution type | Private nonprofit | Private nonprofit |
| Location | Grinnell, IA | Oskaloosa, IA |
| Largest program areas | Social sciences, Biological sciences, Computer science | Education, Business and marketing, Psychology |
Grinnell College is more selective (14.5% vs 51.9% acceptance rate). Grinnell College has a lower average net price after grant aid ($17,648 vs $22,601). Grinnell College reports the higher graduation rate (88.1% vs 32.6%). Grinnell College is the larger undergraduate campus (1,729 students). Use the free side-by-side comparison tool to weigh cost, program fit, location, and outcomes for your own list — and verify deadlines and requirements with each college.
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Common questions when choosing between Grinnell College and William Penn University
Grinnell College has an acceptance rate of 14.5%; William Penn University is around 51.9%. Selectivity is only one factor — GPA, essays, major, and residency (for publics) all change the odds.
Grinnell College tuition is $68,106/year. William Penn University is $29,750/year. Compare net price after aid, not sticker price — especially for private schools and out-of-state publics.
Use College Decider's free comparison tool at /compare — add both schools to see tuition, acceptance rates, graduation outcomes, and more in one table.
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