| Index | Catonsville | Maryland | National |
| Average Test Scores | 40% | 40% | 48% |
| Student/Teacher ratio | 16:1 | 16:1 | 16:1 |
| Total public schools | 3 | 1,163 | 79,221 |
| Total private schools | 1 | 674 | 24,874 |
| Total post-secondary schools | 1 | 112 | 7,963 |
| Index | Catonsville | Maryland | National |
| Completed 8th grade | 92.8% | 87.5% | 84.3% |
| Completed high school | 92.2% | 86.5% | 83.0% |
| Completed some college | 73.2% | 64.2% | 59.4% |
| Completed associate degree | 55.0% | 44.8% | 38.5% |
| Completed bachelors | 48.5% | 38.4% | 30.3% |
| Completed masters | 21.4% | 17.7% | 11.5% |
| Completed professional degree | 6.6% | 5.5% | 3.3% |
| Completed doctorate | 3.5% | 2.5% | 1.3% |
There are a total of 3 public schools, 1 private schools and 1 post-secondary schools in Catonsville. Using the proficiency score averages, the average test scores for Catonsville, MD schools is 40%. The average student to teacher ratio is 16:1. In Catonsville, MD, an average of 92.8% of students have completed 8th grade and an average of 92.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Perry Hall, MD | 27,778 | 70% | 46.4% |
| Severna Park, MD | 38,729 | 69% | 44.6% |
| Sykesville, MD | 3,948 | 69% | 43.8% |
| Lutherville, MD | 6,715 | 67% | 39.2% |
| Ellicott City, MD | 73,272 | 66% | 37.5% |
| Catonsville, MD | 41,592 | 40% | 17.4% |
| City | Population | Avg. Test Scores | National Avg. |
| Leominster, MA | 41,581 | 48% | 0.1% |
| Woonsocket, RI | 41,616 | 22% | 54.9% |
| Rancho Palos Verdes, CA | 41,635 | 75% | 56.5% |
| Mableton, GA | 41,647 | 30% | 38.0% |
| La Quinta, CA | 41,650 | 39% | 19.2% |
| Catonsville, MD | 41,592 | 40% | 17.4% |
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