| 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 |


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| 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 | 28,466 | 70% | 46.4% |
| Severna Park, MD | 39,770 | 69% | 44.6% |
| Sykesville, MD | 4,060 | 69% | 43.8% |
| Lutherville, MD | 6,961 | 67% | 39.2% |
| Ellicott City, MD | 75,837 | 66% | 37.5% |
| Catonsville, MD | 42,742 | 40% | 17.4% |
| City | Population | Avg. Test Scores | National Avg. |
| Grove City, OH | 42,755 | 68% | 42.1% |
| Woonsocket, RI | 42,718 | 22% | 54.9% |
| Puyallup, WA | 42,717 | 56% | 16.0% |
| Moline, IL | 42,715 | 23% | 52.3% |
| La Quinta, CA | 42,775 | 39% | 19.2% |
| Catonsville, MD | 42,742 | 40% | 17.4% |