| Index | Katy | Texas | National |
| Average Test Scores | 60% | 47% | 48% |
| Student/Teacher ratio | 15:1 | 14:1 | 16:1 |
| Total public schools | 45 | 7,418 | 79,221 |
| Total private schools | 9 | 1,267 | 24,874 |
| Total post-secondary schools | n/a | 463 | 7,963 |
| Index | Katy | Texas | National |
| Completed 8th grade | 84.0% | 79.3% | 84.3% |
| Completed high school | 81.6% | 77.8% | 83.0% |
| Completed some college | 59.6% | 57.3% | 59.4% |
| Completed associate degree | 36.6% | 34.9% | 38.5% |
| Completed bachelors | 31.6% | 28.1% | 30.3% |
| Completed masters | 10.1% | 9.6% | 11.5% |
| Completed professional degree | 2.1% | 2.6% | 3.3% |
| Completed doctorate | 0.4% | 1.1% | 1.3% |
There are a total of 45 public schools, 9 private schools and n/a post-secondary schools in Katy. Using the proficiency score averages, the average test scores for Katy, TX schools is 60%. The average student to teacher ratio is 15:1. In Katy, TX, an average of 84.0% of students have completed 8th grade and an average of 81.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Fulshear, TX | 12,213 | 71% | 46.9% |
| Sugar Land, TX | 118,563 | 69% | 43.7% |
| Richmond, TX | 12,592 | 59% | 23.2% |
| Meadows Place, TX | 4,899 | 53% | 10.9% |
| Wallis, TX | 1,755 | 42% | 13.5% |
| Katy, TX | 20,296 | 60% | 25.7% |
| City | Population | Avg. Test Scores | National Avg. |
| Libertyville, IL | 20,300 | 71% | 48.7% |
| Ashland, OH | 20,304 | 63% | 31.3% |
| Warrensburg, MO | 20,313 | 49% | 2.6% |
| Rolla, MO | 20,273 | 51% | 5.4% |
| Agoura Hills, CA | 20,269 | 65% | 36.1% |
| Katy, TX | 20,296 | 60% | 25.7% |
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