| Index | Harlowton | Montana | National |
| Average Test Scores | 37% | 45% | 48% |
| Student/Teacher ratio | 13:1 | 14:1 | 16:1 |
| Total public schools | 3 | 408 | 79,221 |
| Total private schools | n/a | 77 | 24,874 |
| Total post-secondary schools | n/a | 32 | 7,963 |
| Index | Harlowton | Montana | National |
| Completed 8th grade | 82.8% | 89.4% | 84.3% |
| Completed high school | 78.2% | 88.2% | 83.0% |
| Completed some college | 44.2% | 63.1% | 59.4% |
| Completed associate degree | 20.0% | 38.6% | 38.5% |
| Completed bachelors | 18.1% | 29.9% | 30.3% |
| Completed masters | 2.7% | 9.8% | 11.5% |
| Completed professional degree | 0.0% | 3.0% | 3.3% |
| Completed doctorate | 0.0% | 1.2% | 1.3% |
There are a total of 3 public schools, n/a private schools and n/a post-secondary schools in Harlowton. Using the proficiency score averages, the average test scores for Harlowton, MT schools is 37%. The average student to teacher ratio is 13:1. In Harlowton, MT, an average of 82.8% of students have completed 8th grade and an average of 78.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Harlowton, MT | 1,031 | 37% | 22.2% |
| City | Population | Avg. Test Scores | National Avg. |
| Shipshewana, IN | 1,031 | 61% | 26.6% |
| Plymouth, CA | 1,031 | 49% | 1.0% |
| South Woodstock, CT | 1,031 | 54% | 12.5% |
| Primghar, IA | 1,030 | 70% | 44.8% |
| Washburn, ME | 1,030 | 42% | 12.0% |
| Harlowton, MT | 1,031 | 37% | 22.2% |
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