| Index | Custer | Michigan | National |
| Average Test Scores | 32% | 42% | 48% |
| Student/Teacher ratio | n/a | 22:1 | 16:1 |
| Total public schools | n/a | 3,421 | 79,221 |
| Total private schools | n/a | 835 | 24,874 |
| Total post-secondary schools | n/a | 196 | 7,963 |
| Index | Custer | Michigan | National |
| Completed 8th grade | 89.0% | 86.9% | 84.3% |
| Completed high school | 88.5% | 85.9% | 83.0% |
| Completed some college | 46.2% | 60.3% | 59.4% |
| Completed associate degree | 18.7% | 36.5% | 38.5% |
| Completed bachelors | 10.4% | 27.4% | 30.3% |
| Completed masters | 3.8% | 10.7% | 11.5% |
| Completed professional degree | 0.0% | 2.8% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Custer. Using the proficiency score averages, the average test scores for Custer, MI schools is 32%. The average student to teacher ratio is n/a. In Custer, MI, an average of 89.0% of students have completed 8th grade and an average of 88.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Pentwater, MI | 797 | 60% | 24.0% |
| Ludington, MI | 8,081 | 52% | 7.6% |
| Scottville, MI | 1,290 | 31% | 36.5% |
| Custer, MI | 294 | 32% | 33.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Alta, WY | 294 | 75% | 56.3% |
| Kennard, TX | 294 | 44% | 8.3% |
| Ridgeway, SC | 294 | 42% | 12.5% |
| Cuba, AL | 294 | 25% | 49.0% |
| Lower Kalskag, AK | 293 | 10% | 79.2% |
| Custer, MI | 294 | 32% | 33.3% |
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