| Index | Portland | Tennessee | National |
| Average Test Scores | 42% | 35% | 48% |
| Student/Teacher ratio | n/a | n/a | 16:1 |
| Total public schools | 5 | 1,390 | 79,221 |
| Total private schools | 2 | 430 | 24,874 |
| Total post-secondary schools | n/a | 189 | 7,963 |
| Index | Portland | Tennessee | National |
| Completed 8th grade | 74.5% | 82.0% | 84.3% |
| Completed high school | 72.7% | 79.9% | 83.0% |
| Completed some college | 42.3% | 53.2% | 59.4% |
| Completed associate degree | 19.3% | 32.2% | 38.5% |
| Completed bachelors | 12.1% | 25.4% | 30.3% |
| Completed masters | 3.1% | 9.3% | 11.5% |
| Completed professional degree | 0.7% | 2.8% | 3.3% |
| Completed doctorate | 0.2% | 1.2% | 1.3% |
There are a total of 5 public schools, 2 private schools and n/a post-secondary schools in Portland. Using the proficiency score averages, the average test scores for Portland, TN schools is 42%. The average student to teacher ratio is n/a. In Portland, TN, an average of 74.5% of students have completed 8th grade and an average of 72.7% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Cottontown, TN | 356 | 62% | 29.2% |
| Franklin, KY | 8,909 | 45% | 6.0% |
| White House, TN | 12,258 | 44% | 9.2% |
| Gallatin, TN | 40,262 | 43% | 11.1% |
| Ridgetop, TN | 2,441 | 39% | 18.8% |
| Portland, TN | 12,928 | 42% | 12.4% |
| City | Population | Avg. Test Scores | National Avg. |
| Ridgefield Park, NJ | 12,928 | 48% | 0.8% |
| New Carrollton, MD | 12,925 | 22% | 53.3% |
| Lexington Park, MD | 12,934 | 46% | 3.5% |
| Davidson, NC | 12,920 | 68% | 42.2% |
| Marshall, MO | 12,920 | 35% | 28.1% |
| Portland, TN | 12,928 | 42% | 12.4% |
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