| Index | Castle Rock | Colorado | National |
| Average Test Scores | 46% | 39% | 48% |
| Student/Teacher ratio | 76:1 | 17:1 | 16:1 |
| Total public schools | 13 | 1,426 | 79,221 |
| Total private schools | 1 | 384 | 24,874 |
| Total post-secondary schools | n/a | 138 | 7,963 |
| Index | Castle Rock | Colorado | National |
| Completed 8th grade | 94.9% | 87.9% | 84.3% |
| Completed high school | 94.7% | 87.1% | 83.0% |
| Completed some college | 82.4% | 69.3% | 59.4% |
| Completed associate degree | 58.8% | 47.1% | 38.5% |
| Completed bachelors | 48.5% | 38.7% | 30.3% |
| Completed masters | 15.2% | 14.3% | 11.5% |
| Completed professional degree | 3.2% | 3.9% | 3.3% |
| Completed doctorate | 1.3% | 1.6% | 1.3% |
There are a total of 13 public schools, 1 private schools and n/a post-secondary schools in Castle Rock. Using the proficiency score averages, the average test scores for Castle Rock, CO schools is 46%. The average student to teacher ratio is 76:1. In Castle Rock, CO, an average of 94.9% of students have completed 8th grade and an average of 94.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Lone Tree, CO | 13,381 | 62% | 29.7% |
| Highlands Ranch, CO | 107,017 | 62% | 28.2% |
| Castle Pines, CO | 10,977 | 61% | 26.0% |
| Franktown, CO | 214 | 60% | 24.5% |
| Littleton, CO | 46,208 | 54% | 11.7% |
| Castle Rock, CO | 65,176 | 46% | 5.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Jupiter, FL | 65,139 | 69% | 44.1% |
| Bayonne, NJ | 65,112 | 47% | 1.8% |
| Bethesda, MD | 65,092 | 77% | 60.6% |
| Sammamish, WA | 65,265 | 86% | 78.2% |
| Laguna Niguel, CA | 65,048 | 66% | 38.3% |
| Castle Rock, CO | 65,176 | 46% | 5.1% |
Here are the best places to live in Colorado
Most Dangerous Cities In The US
See the best places to live in Castle Rock
These are the 10 cheapest cities in Colorado