| Index | Portland | Indiana | National |
| Average Test Scores | 49% | 46% | 48% |
| Student/Teacher ratio | 27:1 | 22:1 | 16:1 |
| Total public schools | 5 | 1,755 | 79,221 |
| Total private schools | n/a | 675 | 24,874 |
| Total post-secondary schools | n/a | 141 | 7,963 |
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| Index | Portland | Indiana | National |
| Completed 8th grade | 75.2% | 84.6% | 84.3% |
| Completed high school | 73.0% | 82.9% | 83.0% |
| Completed some college | 34.9% | 53.8% | 59.4% |
| Completed associate degree | 15.7% | 33.0% | 38.5% |
| Completed bachelors | 7.0% | 24.6% | 30.3% |
| Completed masters | 3.0% | 8.9% | 11.5% |
| Completed professional degree | 0.9% | 2.4% | 3.3% |
| Completed doctorate | 0.9% | 1.0% | 1.3% |
There are a total of 5 public schools, n/a private schools and n/a post-secondary schools in Portland. Using the proficiency score averages, the average test scores for Portland, IN schools is 49%. The average student to teacher ratio is 27:1. In Portland, IN, an average of 75.2% of students have completed 8th grade and an average of 73.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Fort Recovery, OH | 1,780 | 80% | 67.0% |
| Ridgeville, IN | 567 | 62% | 29.2% |
| Albany, IN | 2,426 | 60% | 24.0% |
| Redkey, IN | 1,546 | 55% | 13.5% |
| Bryant, IN | 218 | 50% | 3.1% |
| Portland, IN | 6,104 | 49% | 1.0% |
| City | Population | Avg. Test Scores | National Avg. |
| High Springs, FL | 6,104 | 66% | 36.5% |
| Erwin, TN | 6,103 | 34% | 29.8% |
| Pevely, MO | 6,102 | 47% | 2.1% |
| Waupaca, WI | 6,101 | 50% | 4.9% |
| Lewistown, MT | 6,107 | 48% | 0.8% |
| Portland, IN | 6,104 | 49% | 1.0% |
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