| Index | Island Lake | Illinois | National |
| Average Test Scores | 41% | 33% | 48% |
| Student/Teacher ratio | 19:1 | 18:1 | 16:1 |
| Total public schools | 1 | 3,938 | 79,221 |
| Total private schools | n/a | 1,438 | 24,874 |
| Total post-secondary schools | n/a | 306 | 7,963 |
| Index | Island Lake | Illinois | National |
| Completed 8th grade | 90.8% | 86.2% | 84.3% |
| Completed high school | 90.4% | 84.7% | 83.0% |
| Completed some college | 65.5% | 61.8% | 59.4% |
| Completed associate degree | 36.7% | 40.7% | 38.5% |
| Completed bachelors | 27.7% | 32.9% | 30.3% |
| Completed masters | 5.6% | 12.7% | 11.5% |
| Completed professional degree | 0.6% | 3.4% | 3.3% |
| Completed doctorate | 0.1% | 1.2% | 1.3% |
There are a total of 1 public schools, n/a private schools and n/a post-secondary schools in Island Lake. Using the proficiency score averages, the average test scores for Island Lake, IL schools is 41%. The average student to teacher ratio is 19:1. In Island Lake, IL, an average of 90.8% of students have completed 8th grade and an average of 90.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Lincolnshire, IL | 7,694 | 78% | 62.8% |
| Libertyville, IL | 20,300 | 71% | 48.7% |
| Long Grove, IL | 7,907 | 70% | 46.5% |
| South Barrington, IL | 4,963 | 69% | 42.7% |
| North Barrington, IL | 2,789 | 64% | 33.3% |
| Island Lake, IL | 8,112 | 41% | 15.1% |
| City | Population | Avg. Test Scores | National Avg. |
| North Bay Village, FL | 8,108 | 65% | 34.4% |
| Croton-on-Hudson, NY | 8,121 | 78% | 62.8% |
| Vinton, VA | 8,102 | 84% | 75.3% |
| Oradell, NJ | 8,126 | 77% | 60.4% |
| Topanga, CA | 8,098 | 67% | 39.6% |
| Island Lake, IL | 8,112 | 41% | 15.1% |
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