| Index | Downey | California | National |
| Average Test Scores | 45% | 43% | 48% |
| Student/Teacher ratio | 21:1 | 20:1 | 16:1 |
| Total public schools | 25 | 8,308 | 79,221 |
| Total private schools | 14 | 3,438 | 24,874 |
| Total post-secondary schools | 2 | 1,085 | 7,963 |
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| Index | Downey | California | National |
| Completed 8th grade | 75.3% | 81.1% | 84.3% |
| Completed high school | 74.2% | 79.8% | 83.0% |
| Completed some college | 52.5% | 61.5% | 59.4% |
| Completed associate degree | 30.1% | 39.8% | 38.5% |
| Completed bachelors | 21.9% | 32.0% | 30.3% |
| Completed masters | 6.4% | 11.9% | 11.5% |
| Completed professional degree | 1.3% | 3.9% | 3.3% |
| Completed doctorate | 0.5% | 1.6% | 1.3% |
There are a total of 25 public schools, 14 private schools and 2 post-secondary schools in Downey. Using the proficiency score averages, the average test scores for Downey, CA schools is 45%. The average student to teacher ratio is 21:1. In Downey, CA, an average of 75.3% of students have completed 8th grade and an average of 74.2% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| San Marino, CA | 13,020 | 88% | 84.1% |
| South Pasadena, CA | 25,478 | 82% | 70.2% |
| Los Alamitos, CA | 11,521 | 82% | 70.1% |
| Rolling Hills Estates, CA | 8,025 | 75% | 56.9% |
| Rancho Palos Verdes, CA | 41,635 | 75% | 56.5% |
| Downey, CA | 111,263 | 45% | 5.9% |
| City | Population | Avg. Test Scores | National Avg. |
| Lowell, MA | 111,311 | 40% | 17.5% |
| Pompano Beach, FL | 111,202 | 43% | 10.2% |
| Centennial, CO | 111,331 | 50% | 4.8% |
| Antioch, CA | 111,468 | 27% | 44.7% |
| West Palm Beach, FL | 111,006 | 50% | 3.8% |
| Downey, CA | 111,263 | 45% | 5.9% |
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