| Index | Gardena | California | National |
| Average Test Scores | 38% | 43% | 48% |
| Student/Teacher ratio | 19:1 | 20:1 | 16:1 |
| Total public schools | 13 | 8,308 | 79,221 |
| Total private schools | 10 | 3,438 | 24,874 |
| Total post-secondary schools | 3 | 1,085 | 7,963 |
| Index | Gardena | California | National |
| Completed 8th grade | 81.7% | 81.1% | 84.3% |
| Completed high school | 80.4% | 79.8% | 83.0% |
| Completed some college | 55.9% | 61.5% | 59.4% |
| Completed associate degree | 32.9% | 39.8% | 38.5% |
| Completed bachelors | 24.1% | 32.0% | 30.3% |
| Completed masters | 5.5% | 11.9% | 11.5% |
| Completed professional degree | 1.6% | 3.9% | 3.3% |
| Completed doctorate | 0.7% | 1.6% | 1.3% |
There are a total of 13 public schools, 10 private schools and 3 post-secondary schools in Gardena. Using the proficiency score averages, the average test scores for Gardena, CA schools is 38%. The average student to teacher ratio is 19:1. In Gardena, CA, an average of 81.7% of students have completed 8th grade and an average of 80.4% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| 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% |
| Rolling Hills Estates, CA | 8,025 | 75% | 56.9% |
| Gardena, CA | 59,401 | 38% | 20.9% |
| City | Population | Avg. Test Scores | National Avg. |
| Vineland, NJ | 59,405 | 38% | 21.7% |
| Lancaster, PA | 59,321 | 48% | 0.3% |
| Meriden, CT | 59,512 | 43% | 9.6% |
| Royal Oak, MI | 59,256 | 54% | 13.2% |
| Bartlett, TN | 59,252 | 48% | 0.2% |
| Gardena, CA | 59,401 | 38% | 20.9% |
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