| Index | Castle Hill | 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 | Castle Hill | California | National |
| Completed 8th grade | 98.1% | 81.1% | 84.3% |
| Completed high school | 98.1% | 79.8% | 83.0% |
| Completed some college | 90.2% | 61.5% | 59.4% |
| Completed associate degree | 66.6% | 39.8% | 38.5% |
| Completed bachelors | 62.2% | 32.0% | 30.3% |
| Completed masters | 21.7% | 11.9% | 11.5% |
| Completed professional degree | 13.1% | 3.9% | 3.3% |
| Completed doctorate | 4.8% | 1.6% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Castle Hill. Using the proficiency score averages, the average test scores for Castle Hill, CA schools is n/a. The average student to teacher ratio is n/a. In Castle Hill, CA, an average of 98.1% of students have completed 8th grade and an average of 98.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Orinda, CA | 19,461 | 87% | 81.4% |
| Moraga, CA | 16,896 | 84% | 75.2% |
| Lafayette, CA | 25,949 | 83% | 73.8% |
| Kensington, CA | 5,171 | 80% | 66.7% |
| San Ramon, CA | 81,344 | 78% | 62.9% |
| Castle Hill, CA | 1,164 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Kings Mills, OH | 1,164 | 83% | 73.5% |
| New Columbia, PA | 1,164 | 60% | 24.0% |
| Ridgeway, VA | 1,165 | 83% | 72.9% |
| Santee, SC | 1,165 | 50% | 4.2% |
| Chisholm, ME | 1,165 | 34% | 30.2% |
| Castle Hill, CA | 1,164 | n/a |
Here are the best places to live in California
Check out the 10 most dangerous cities in California
See the best places to live in Castle Hill
Safest States In The US