| Index | Foster City | California | National |
| Average Test Scores | 78% | 43% | 48% |
| Student/Teacher ratio | 21:1 | 20:1 | 16:1 |
| Total public schools | 4 | 8,308 | 79,221 |
| Total private schools | 3 | 3,438 | 24,874 |
| Total post-secondary schools | n/a | 1,085 | 7,963 |
| Index | Foster City | California | National |
| Completed 8th grade | 96.0% | 81.1% | 84.3% |
| Completed high school | 95.6% | 79.8% | 83.0% |
| Completed some college | 88.5% | 61.5% | 59.4% |
| Completed associate degree | 75.5% | 39.8% | 38.5% |
| Completed bachelors | 69.4% | 32.0% | 30.3% |
| Completed masters | 34.1% | 11.9% | 11.5% |
| Completed professional degree | 11.0% | 3.9% | 3.3% |
| Completed doctorate | 6.2% | 1.6% | 1.3% |
There are a total of 4 public schools, 3 private schools and n/a post-secondary schools in Foster City. Using the proficiency score averages, the average test scores for Foster City, CA schools is 78%. The average student to teacher ratio is 21:1. In Foster City, CA, an average of 96.0% of students have completed 8th grade and an average of 95.6% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Los Altos Hills, CA | 8,670 | 87% | 81.3% |
| Portola Valley, CA | 4,678 | 86% | 79.2% |
| Hillsborough, CA | 11,923 | 86% | 78.4% |
| Los Altos, CA | 31,735 | 86% | 78.3% |
| Palo Alto, CA | 70,212 | 81% | 68.5% |
| Foster City, CA | 34,247 | 78% | 63.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Lake Stevens, WA | 34,189 | 64% | 32.6% |
| Douglasville, GA | 34,322 | 43% | 9.8% |
| Prairieville, LA | 34,153 | 88% | 82.5% |
| Mason, OH | 34,386 | 87% | 81.8% |
| Baldwin, NY | 34,096 | 63% | 31.8% |
| Foster City, CA | 34,247 | 78% | 63.3% |
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