| Index | Charter Oak | California | National |
| Average Test Scores | n/a | 43% | 48% |
| Student/Teacher ratio | n/a | 20:1 | 16:1 |
| Total public schools | n/a | 8,308 | 79,221 |
| Total private schools | n/a | 3,438 | 24,874 |
| Total post-secondary schools | n/a | 1,085 | 7,963 |
| Index | Charter Oak | California | National |
| Completed 8th grade | 83.2% | 81.1% | 84.3% |
| Completed high school | 82.3% | 79.8% | 83.0% |
| Completed some college | 61.8% | 61.5% | 59.4% |
| Completed associate degree | 38.3% | 39.8% | 38.5% |
| Completed bachelors | 22.7% | 32.0% | 30.3% |
| Completed masters | 5.5% | 11.9% | 11.5% |
| Completed professional degree | 0.9% | 3.9% | 3.3% |
| Completed doctorate | 0.3% | 1.6% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Charter Oak. Using the proficiency score averages, the average test scores for Charter Oak, CA schools is n/a. The average student to teacher ratio is n/a. In Charter Oak, CA, an average of 83.2% of students have completed 8th grade and an average of 82.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| San Marino, CA | 13,020 | 88% | 84.1% |
| Arcadia, CA | 57,053 | 74% | 53.2% |
| Yorba Linda, CA | 68,103 | 72% | 50.3% |
| Walnut, CA | 29,764 | 70% | 44.9% |
| Diamond Bar, CA | 55,870 | 67% | 39.8% |
| Charter Oak, CA | 9,963 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Kapaa, HI | 9,961 | 38% | 21.9% |
| Pleasant Hill, IA | 9,959 | 77% | 60.4% |
| River Grove, IL | 9,957 | 32% | 33.9% |
| Lambertville, MI | 9,970 | 50% | 3.1% |
| Boiling Springs, SC | 9,953 | 56% | 17.4% |
| Charter Oak, CA | 9,963 | n/a |
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