| Index | Garden City | South Dakota | National |
| Average Test Scores | 20% | 48% | 48% |
| Student/Teacher ratio | n/a | 14:1 | 16:1 |
| Total public schools | n/a | 340 | 79,221 |
| Total private schools | n/a | 76 | 24,874 |
| Total post-secondary schools | n/a | 25 | 7,963 |
| Index | Garden City | South Dakota | National |
| Completed 8th grade | 93.1% | 89.1% | 84.3% |
| Completed high school | 93.1% | 86.8% | 83.0% |
| Completed some college | 86.2% | 60.4% | 59.4% |
| Completed associate degree | 31.0% | 38.5% | 38.5% |
| Completed bachelors | 24.1% | 27.5% | 30.3% |
| Completed masters | 0.0% | 8.1% | 11.5% |
| Completed professional degree | 0.0% | 2.5% | 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 Garden City. Using the proficiency score averages, the average test scores for Garden City, SD schools is 20%. The average student to teacher ratio is n/a. In Garden City, SD, an average of 93.1% of students have completed 8th grade and an average of 93.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Henry, SD | 295 | 47% | 2.8% |
| Florence, SD | 371 | 46% | 5.2% |
| Clark, SD | 1,233 | 42% | 11.7% |
| Garden City, SD | 93 | 20% | 58.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Diomede, AK | 93 | 50% | 4.2% |
| Robbins, TN | 93 | 35% | 28.1% |
| Boon, MI | 93 | 47% | 2.1% |
| Alder, MT | 93 | 50% | 4.2% |
| Palmyra, VA | 92 | 81% | 68.2% |
| Garden City, SD | 93 | 20% | 58.3% |
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