| Index | San Carlos | Arizona | National |
| Average Test Scores | n/a | 12% | 48% |
| Student/Teacher ratio | 12:1 | 18:1 | 16:1 |
| Total public schools | 4 | 1,863 | 79,221 |
| Total private schools | 1 | 316 | 24,874 |
| Total post-secondary schools | n/a | 148 | 7,963 |
| Index | San Carlos | Arizona | National |
| Completed 8th grade | 62.2% | 83.7% | 84.3% |
| Completed high school | 60.3% | 82.2% | 83.0% |
| Completed some college | 33.3% | 62.0% | 59.4% |
| Completed associate degree | 8.9% | 36.5% | 38.5% |
| Completed bachelors | 3.4% | 28.0% | 30.3% |
| Completed masters | 2.8% | 10.4% | 11.5% |
| Completed professional degree | 0.8% | 2.9% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of 4 public schools, 1 private schools and n/a post-secondary schools in San Carlos. Using the proficiency score averages, the average test scores for San Carlos, AZ schools is n/a. The average student to teacher ratio is 12:1. In San Carlos, AZ, an average of 62.2% of students have completed 8th grade and an average of 60.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| San Carlos, AZ | 4,440 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Beaver, PA | 4,441 | 73% | 51.4% |
| Montgomery, NY | 4,438 | 62% | 29.4% |
| Kanab, UT | 4,436 | 50% | 3.9% |
| Hollister, MO | 4,444 | 40% | 17.6% |
| Larksville, PA | 4,436 | 34% | 29.3% |
| San Carlos, AZ | 4,440 | n/a |
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