| Index | Willowbrook | California | National |
| Average Test Scores | n/a | 43% | 48% |
| Student/Teacher ratio | n/a | 20:1 | 16:1 |
| Total public schools | n/a | 8,308 | 79,221 |
| Total private schools | n/a | 3,438 | 24,874 |
| Total post-secondary schools | n/a | 1,085 | 7,963 |
| Index | Willowbrook | California | National |
| Completed 8th grade | 51.9% | 81.1% | 84.3% |
| Completed high school | 48.4% | 79.8% | 83.0% |
| Completed some college | 22.3% | 61.5% | 59.4% |
| Completed associate degree | 8.0% | 39.8% | 38.5% |
| Completed bachelors | 4.5% | 32.0% | 30.3% |
| Completed masters | 1.2% | 11.9% | 11.5% |
| Completed professional degree | 0.5% | 3.9% | 3.3% |
| Completed doctorate | 0.4% | 1.6% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Willowbrook. Using the proficiency score averages, the average test scores for Willowbrook, CA schools is n/a. The average student to teacher ratio is n/a. In Willowbrook, CA, an average of 51.9% of students have completed 8th grade and an average of 48.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| San Marino, CA | 13,020 | 88% | 84.1% |
| Manhattan Beach, CA | 35,064 | 83% | 73.2% |
| South Pasadena, CA | 25,478 | 82% | 70.2% |
| Los Alamitos, CA | 11,521 | 82% | 70.1% |
| Hermosa Beach, CA | 19,147 | 78% | 62.5% |
| Willowbrook, CA | 24,401 | n/a |
| City | Population | Avg. Test Scores | National Avg. |
| Inkster, MI | 24,398 | 28% | 41.3% |
| Selma, CA | 24,405 | 33% | 32.2% |
| Trotwood, OH | 24,410 | 35% | 27.3% |
| Norfolk, NE | 24,410 | 57% | 18.5% |
| Wilsonville, OR | 24,413 | 55% | 14.3% |
| Willowbrook, CA | 24,401 | n/a |
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