| Index | South Portland | Maine | National |
| Average Test Scores | 49% | 45% | 48% |
| Student/Teacher ratio | 13:1 | 14:1 | 16:1 |
| Total public schools | 11 | 345 | 79,221 |
| Total private schools | 5 | 89 | 24,874 |
| Total post-secondary schools | 3 | 45 | 7,963 |
| Index | South Portland | Maine | National |
| Completed 8th grade | 92.4% | 88.3% | 84.3% |
| Completed high school | 92.0% | 86.8% | 83.0% |
| Completed some college | 72.2% | 58.8% | 59.4% |
| Completed associate degree | 52.3% | 39.0% | 38.5% |
| Completed bachelors | 42.6% | 29.3% | 30.3% |
| Completed masters | 14.4% | 10.5% | 11.5% |
| Completed professional degree | 3.5% | 3.0% | 3.3% |
| Completed doctorate | 0.9% | 1.3% | 1.3% |
There are a total of 11 public schools, 5 private schools and 3 post-secondary schools in South Portland. Using the proficiency score averages, the average test scores for South Portland, ME schools is 49%. The average student to teacher ratio is 13:1. In South Portland, ME, an average of 92.4% of students have completed 8th grade and an average of 92.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Falmouth, ME | 1,877 | 75% | 55.9% |
| Yarmouth, ME | 5,752 | 74% | 53.5% |
| Cumberland Center, ME | 2,944 | 72% | 49.7% |
| Scarborough, ME | 5,268 | 65% | 35.1% |
| Freeport, ME | 1,879 | 60% | 25.3% |
| South Portland, ME | 25,665 | 49% | 1.5% |
| City | Population | Avg. Test Scores | National Avg. |
| Soledad, CA | 25,667 | 29% | 40.2% |
| Moscow, ID | 25,652 | 64% | 33.6% |
| Madison, MS | 25,650 | 66% | 37.6% |
| Ruskin, FL | 25,640 | 35% | 26.4% |
| Reedley, CA | 25,710 | 46% | 5.1% |
| South Portland, ME | 25,665 | 49% | 1.5% |
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