| Index | San Mateo | California | National |
| Average Test Scores | 51% | 43% | 48% |
| Student/Teacher ratio | 20:1 | 20:1 | 16:1 |
| Total public schools | 20 | 8,308 | 79,221 |
| Total private schools | 15 | 3,438 | 24,874 |
| Total post-secondary schools | 2 | 1,085 | 7,963 |
| Index | San Mateo | California | National |
| Completed 8th grade | 88.5% | 81.1% | 84.3% |
| Completed high school | 87.1% | 79.8% | 83.0% |
| Completed some college | 72.7% | 61.5% | 59.4% |
| Completed associate degree | 55.6% | 39.8% | 38.5% |
| Completed bachelors | 48.1% | 32.0% | 30.3% |
| Completed masters | 19.6% | 11.9% | 11.5% |
| Completed professional degree | 6.7% | 3.9% | 3.3% |
| Completed doctorate | 2.8% | 1.6% | 1.3% |
There are a total of 20 public schools, 15 private schools and 2 post-secondary schools in San Mateo. Using the proficiency score averages, the average test scores for San Mateo, CA schools is 51%. The average student to teacher ratio is 20:1. In San Mateo, CA, an average of 88.5% of students have completed 8th grade and an average of 87.1% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Los Altos Hills, CA | 8,496 | 87% | 81.3% |
| Portola Valley, CA | 4,568 | 86% | 79.2% |
| Hillsborough, CA | 11,608 | 86% | 78.4% |
| Los Altos, CA | 30,878 | 86% | 78.3% |
| Palo Alto, CA | 67,973 | 81% | 68.5% |
| San Mateo, CA | 103,619 | 51% | 5.4% |
| City | Population | Avg. Test Scores | National Avg. |
| Rialto, CA | 103,549 | 30% | 37.8% |
| Burbank, CA | 103,411 | 56% | 17.3% |
| El Cajon, CA | 103,249 | 39% | 19.5% |
| Allen, TX | 104,040 | 71% | 48.1% |
| Las Cruces, NM | 102,950 | 27% | 44.6% |
| San Mateo, CA | 103,619 | 51% | 5.4% |
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