| Index | Duarte | California | National |
| Average Test Scores | 40% | 43% | 48% |
| Student/Teacher ratio | 21:1 | 20:1 | 16:1 |
| Total public schools | 8 | 8,308 | 79,221 |
| Total private schools | 4 | 3,438 | 24,874 |
| Total post-secondary schools | 1 | 1,085 | 7,963 |
| Index | Duarte | California | National |
| Completed 8th grade | 81.8% | 81.1% | 84.3% |
| Completed high school | 80.2% | 79.8% | 83.0% |
| Completed some college | 58.3% | 61.5% | 59.4% |
| Completed associate degree | 37.8% | 39.8% | 38.5% |
| Completed bachelors | 30.5% | 32.0% | 30.3% |
| Completed masters | 12.3% | 11.9% | 11.5% |
| Completed professional degree | 4.4% | 3.9% | 3.3% |
| Completed doctorate | 2.3% | 1.6% | 1.3% |
There are a total of 8 public schools, 4 private schools and 1 post-secondary schools in Duarte. Using the proficiency score averages, the average test scores for Duarte, CA schools is 40%. The average student to teacher ratio is 21:1. In Duarte, CA, an average of 81.8% of students have completed 8th grade and an average of 80.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| San Marino, CA | 13,020 | 88% | 84.1% |
| La Cañada Flintridge, CA | 20,078 | 87% | 82.0% |
| South Pasadena, CA | 25,478 | 82% | 70.2% |
| Arcadia, CA | 57,053 | 74% | 53.2% |
| La Crescenta-Montrose, CA | 20,171 | 72% | 49.2% |
| Duarte, CA | 21,399 | 40% | 16.1% |
| City | Population | Avg. Test Scores | National Avg. |
| Bear, DE | 21,397 | 48% | 0.7% |
| Mountain House, CA | 21,387 | 69% | 42.9% |
| Mukilteo, WA | 21,414 | 69% | 43.6% |
| Portsmouth, NH | 21,418 | 75% | 55.8% |
| North Bellmore, NY | 21,422 | 57% | 18.8% |
| Duarte, CA | 21,399 | 40% | 16.1% |
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