| Index | Middletown | California | National |
| Average Test Scores | 42% | 43% | 48% |
| Student/Teacher ratio | 15:1 | 20:1 | 16:1 |
| Total public schools | 8 | 8,308 | 79,221 |
| Total private schools | 2 | 3,438 | 24,874 |
| Total post-secondary schools | n/a | 1,085 | 7,963 |
| Index | Middletown | California | National |
| Completed 8th grade | 100.0% | 81.1% | 84.3% |
| Completed high school | 92.4% | 79.8% | 83.0% |
| Completed some college | 75.4% | 61.5% | 59.4% |
| Completed associate degree | 49.2% | 39.8% | 38.5% |
| Completed bachelors | 21.8% | 32.0% | 30.3% |
| Completed masters | 5.9% | 11.9% | 11.5% |
| Completed professional degree | 0.0% | 3.9% | 3.3% |
| Completed doctorate | 0.0% | 1.6% | 1.3% |
There are a total of 8 public schools, 2 private schools and n/a post-secondary schools in Middletown. Using the proficiency score averages, the average test scores for Middletown, CA schools is 42%. The average student to teacher ratio is 15:1. In Middletown, CA, an average of 100.0% of students have completed 8th grade and an average of 92.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Angwin, CA | 3,415 | 55% | 14.6% |
| Cobb, CA | 805 | 52% | 8.3% |
| Healdsburg, CA | 11,924 | 50% | 4.8% |
| Hidden Valley Lake, CA | 5,948 | 50% | 4.2% |
| Calistoga, CA | 5,346 | 42% | 12.5% |
| Middletown, CA | 725 | 42% | 12.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Wellsburg, IA | 725 | 70% | 44.8% |
| Blairsville, GA | 725 | 57% | 18.8% |
| Hopewell Junction, NY | 725 | 74% | 54.9% |
| Wilton, ND | 725 | 52% | 8.9% |
| Harwood, ND | 725 | 65% | 34.4% |
| Middletown, CA | 725 | 42% | 12.1% |
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