| Index | Gardiner | Montana | National |
| Average Test Scores | 57% | 45% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 408 | 79,221 |
| Total private schools | n/a | 77 | 24,874 |
| Total post-secondary schools | n/a | 32 | 7,963 |
| Index | Gardiner | Montana | National |
| Completed 8th grade | 91.5% | 89.4% | 84.3% |
| Completed high school | 90.0% | 88.2% | 83.0% |
| Completed some college | 70.3% | 63.1% | 59.4% |
| Completed associate degree | 50.3% | 38.6% | 38.5% |
| Completed bachelors | 45.2% | 29.9% | 30.3% |
| Completed masters | 15.8% | 9.8% | 11.5% |
| Completed professional degree | 2.6% | 3.0% | 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 Gardiner. Using the proficiency score averages, the average test scores for Gardiner, MT schools is 57%. The average student to teacher ratio is n/a. In Gardiner, MT, an average of 91.5% of students have completed 8th grade and an average of 90.0% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Gardiner, MT | 893 | 57% | 18.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Lansing, IA | 893 | 80% | 66.7% |
| Riverton, KS | 893 | 26% | 46.9% |
| Long Grove, IA | 893 | 87% | 81.3% |
| Montandon, PA | 892 | 60% | 24.0% |
| Richfield, NC | 892 | 40% | 17.7% |
| Gardiner, MT | 893 | 57% | 18.1% |
Here are the best places to live in Montana
Check out the 10 most dangerous cities in Montana
Check out the 10 safest cities in Montana
Safest Cities In The US