| Index | Castalian Springs | Tennessee | National |
| Average Test Scores | n/a | 35% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | n/a | 1,390 | 79,221 |
| Total private schools | n/a | 430 | 24,874 |
| Total post-secondary schools | n/a | 189 | 7,963 |
| Index | Castalian Springs | Tennessee | National |
| Completed 8th grade | 64.0% | 82.0% | 84.3% |
| Completed high school | 64.0% | 79.9% | 83.0% |
| Completed some college | 17.8% | 53.2% | 59.4% |
| Completed associate degree | 5.4% | 32.2% | 38.5% |
| Completed bachelors | 3.4% | 25.4% | 30.3% |
| Completed masters | 0.0% | 9.3% | 11.5% |
| Completed professional degree | 0.0% | 2.8% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Castalian Springs. Using the proficiency score averages, the average test scores for Castalian Springs, TN schools is n/a. The average student to teacher ratio is n/a. In Castalian Springs, TN, an average of 64.0% of students have completed 8th grade and an average of 64.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Cottontown, TN | 356 | 62% | 29.2% |
| Mount Juliet, TN | 35,834 | 56% | 16.8% |
| Hartsville (Trousdale County) , TN | 7,970 | 47% | 1.7% |
| Westmoreland, TN | 2,622 | 45% | 5.7% |
| Gallatin, TN | 40,262 | 43% | 11.1% |
| Castalian Springs, TN | 397 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Arapahoe, NC | 397 | 40% | 17.7% |
| Sheep Springs, NM | 397 | 10% | 79.2% |
| St. Paul, OR | 396 | 52% | 8.9% |
| Crowder, OK | 398 | 26% | 45.8% |
| Emden, IL | 398 | 40% | 16.7% |
| Castalian Springs, TN | 397 | n/a |
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