Iowa schools ranked by test score
Latest ISASP year (2024-25). 311 schools with reported Science scores. State average: 67.3%.
| Rank | School | Level | Science | vs state |
|---|---|---|---|---|
| 1 | Denver Senior High School Denver · Denver Comm School District | High | 94.2% | +26.9pp |
| 2 | North Union High School Armstrong · North Union Comm School District | High | 93.2% | +25.9pp |
| 3 | Gilbert High School Gilbert · Gilbert Comm School District | High | 92.3% | +25.0pp |
| 4 | Madrid High School Madrid · Madrid Comm School District | High | 92.2% | +24.9pp |
| 5 | Grundy Center High School Grundy Center · Grundy Center Comm School District | High | 91.1% | +23.8pp |
| 6 | Clayton Ridge High School Guttenberg · Clayton Ridge Comm School District | High | 90.6% | +23.3pp |
| 7 | Treynor High School Treynor · Treynor Comm School District | High | 90.6% | +23.3pp |
| 8 | Martensdale-St Marys Jr-Sr High School Martensdale · Martensdale-St Marys Comm School District | High | 90.3% | +23.0pp |
| 9 | Bedford High School Bedford · Bedford Comm School District | High | 89.8% | +22.5pp |
| 10 | Central Lee High School Donnellson · Central Lee Comm School District | High | 89.4% | +22.1pp |
| 11 | Waukon High School Waukon · Allamakee Comm School District | High | 88.8% | +21.5pp |
| 12 | Solon High School Solon · Solon Comm School District | High | 88.7% | +21.4pp |
| 13 | Central Lyon Secondary School Rock Rapids · Central Lyon Comm School District | High | 88.2% | +20.9pp |
| 14 | Van Meter High School Van Meter · Van Meter Comm School District | High | 87.7% | +20.4pp |
| 15 | Humboldt High School Humboldt · Humboldt Comm School District | High | 87.6% | +20.3pp |
| 16 | Pella High School Pella · Pella Comm School District | High | 87.3% | +20.0pp |
| 17 | Earlham Senior High School Earlham · Earlham Comm School District | High | 87.0% | +19.7pp |
| 18 | South Hamilton Middle And High School Jewell · South Hamilton Comm School District | High | 87.0% | +19.7pp |
| 19 | Osage High School Osage · Osage Comm School District | High | 86.9% | +19.6pp |
| 20 | MMCRU High School Marcus · Marcus-Meriden-Cleghorn Comm School District | High | 86.5% | +19.2pp |
| 21 | Lawton-Bronson Junior-Senior High School Lawton · Lawton-Bronson Comm School District | High | 85.9% | +18.6pp |
| 22 | Monticello High School Monticello · Monticello Comm School District | High | 85.7% | +18.4pp |
| 23 | Winterset Senior High School Winterset · Winterset Comm School District | High | 85.5% | +18.2pp |
| 24 | West Bend-Mallard High School West Bend · West Bend-Mallard Comm School District | High | 85.3% | +18.0pp |
| 25 | Western Dubuque High School Epworth · Western Dubuque Comm School District | High | 85.3% | +18.0pp |
| 26 | East Union Middle-High School Afton · East Union Comm School District | High | 84.9% | +17.6pp |
| 27 | Janesville Junior-Senior High School Janesville · Janesville Consolidated School District | High | 84.8% | +17.5pp |
| 28 | Vinton-Shellsburg High School Vinton · Vinton-Shellsburg Comm School District | High | 84.8% | +17.5pp |
| 29 | Forest City High School Forest City · Forest City Comm School District | High | 84.7% | +17.4pp |
| 30 | Aplington-Parkersburg High School Parkersburg · Aplington-Parkersburg Comm School District | High | 84.6% | +17.3pp |
| 31 | Rock Valley High School Rock Valley · Rock Valley Comm School District | High | 84.6% | +17.3pp |
| 32 | Roland-Story High School Story City · Roland-Story Comm School District | High | 84.5% | +17.2pp |
| 33 | ADM Senior High School Adel · Adel DeSoto Minburn Comm School District | High | 84.4% | +17.1pp |
| 34 | Indianola High School Indianola · Indianola Comm School District | High | 84.1% | +16.8pp |
| 35 | Spirit Lake High School Spirit Lake · Spirit Lake Comm School District | High | 84.1% | +16.8pp |
| 36 | Mediapolis High School Mediapolis · Mediapolis Comm School District | High | 83.5% | +16.2pp |
| 37 | Hinton High School Hinton · Hinton Comm School District | High | 83.4% | +16.1pp |
| 38 | North Mahaska Jr-Sr High School New Sharon · North Mahaska Comm School District | High | 83.2% | +15.9pp |
| 39 | Interstate 35 High School Truro · Interstate 35 Comm School District | High | 82.8% | +15.5pp |
| 40 | Lisbon Secondary School Lisbon · Lisbon Comm School District | High | 82.8% | +15.5pp |
| 41 | Ankeny Centennial High School Ankeny · Ankeny Comm School District | High | 82.7% | +15.4pp |
| 42 | Cedar Falls High School Cedar Falls · Cedar Falls Comm School District | High | 82.5% | +15.2pp |
| 43 | Williamsburg Jr-Sr High School Williamsburg · Williamsburg Comm School District | High | 82.2% | +14.9pp |
| 44 | Okoboji High School Milford · Okoboji Comm School District | High | 82.0% | +14.7pp |
| 45 | Pleasant Valley High School Bettendorf · Pleasant Valley Comm School District | High | 82.0% | +14.7pp |
| 46 | Center Point-Urbana High School Center Point · Center Point-Urbana Comm School District | High | 81.8% | +14.5pp |
| 47 | Clear Lake High School Clear Lake · Clear Lake Comm School District | High | 81.7% | +14.4pp |
| 48 | West Delaware High School Manchester · West Delaware County Comm School District | High | 81.5% | +14.2pp |
| 49 | Audubon Middle-High School Audubon · Audubon Comm School District | High | 81.3% | +14.0pp |
| 50 | Clear Creek Amana High School Tiffin · Clear Creek Amana Comm School District | High | 81.3% | +14.0pp |
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About this ranking
Schools are ranked by the percentage of students who scored at or above the ISASP % Proficient threshold on the latest available ISASP Science test (school year 2024-25). A higher percentage is better.
Only public schools with a reasonable cohort size are included (at least 50 total students enrolled, since the source file does not include per-subject student counts), so very small programs and special-purpose centers are filtered out.
The state average shown above is enrollment-weighted: we multiply each school's score by how many of its students tested, sum those across every public school in Iowa, and divide by the total students tested. This way a big school counts more than a tiny one in the typical-student average.