| Index | Hidden Valley Lake | California | National |
| Average Test Scores | 50% | 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 | Hidden Valley Lake | California | National |
| Completed 8th grade | 89.4% | 81.1% | 84.3% |
| Completed high school | 89.4% | 79.8% | 83.0% |
| Completed some college | 70.6% | 61.5% | 59.4% |
| Completed associate degree | 40.8% | 39.8% | 38.5% |
| Completed bachelors | 24.5% | 32.0% | 30.3% |
| Completed masters | 11.3% | 11.9% | 11.5% |
| Completed professional degree | 2.4% | 3.9% | 3.3% |
| Completed doctorate | 0.5% | 1.6% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Hidden Valley Lake. Using the proficiency score averages, the average test scores for Hidden Valley Lake, CA schools is 50%. The average student to teacher ratio is n/a. In Hidden Valley Lake, CA, an average of 89.4% of students have completed 8th grade and an average of 89.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Cobb, CA | 805 | 52% | 8.3% |
| Middletown, CA | 725 | 42% | 12.1% |
| Clearlake, CA | 15,329 | 33% | 31.5% |
| Kelseyville, CA | 3,657 | 30% | 38.5% |
| Lower Lake, CA | 1,065 | 22% | 54.2% |
| Hidden Valley Lake, CA | 5,948 | 50% | 4.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Geneva, OH | 5,947 | 65% | 35.9% |
| Taos, NM | 5,950 | 27% | 44.4% |
| Kingston, TN | 5,946 | 41% | 15.4% |
| Southold, NY | 5,946 | 53% | 10.9% |
| Slaton, TX | 5,953 | 41% | 15.3% |
| Hidden Valley Lake, CA | 5,948 | 50% | 4.2% |
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