| Index | Markham | Texas | National |
| Average Test Scores | 55% | 47% | 48% |
| Student/Teacher ratio | 12:1 | 14:1 | 16:1 |
| Total public schools | 1 | 7,418 | 79,221 |
| Total private schools | n/a | 1,267 | 24,874 |
| Total post-secondary schools | n/a | 463 | 7,963 |
| Index | Markham | Texas | National |
| Completed 8th grade | 70.3% | 79.3% | 84.3% |
| Completed high school | 70.3% | 77.8% | 83.0% |
| Completed some college | 35.5% | 57.3% | 59.4% |
| Completed associate degree | 23.9% | 34.9% | 38.5% |
| Completed bachelors | 17.2% | 28.1% | 30.3% |
| Completed masters | 4.3% | 9.6% | 11.5% |
| Completed professional degree | 0.0% | 2.6% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of 1 public schools, n/a private schools and n/a post-secondary schools in Markham. Using the proficiency score averages, the average test scores for Markham, TX schools is 55%. The average student to teacher ratio is 12:1. In Markham, TX, an average of 70.3% of students have completed 8th grade and an average of 70.3% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Van Vleck, TX | 1,293 | 49% | 2.6% |
| Blessing, TX | 482 | 40% | 17.7% |
| Bay City, TX | 17,672 | 35% | 26.5% |
| Markham, TX | 1,029 | 55% | 13.5% |
| City | Population | Avg. Test Scores | National Avg. |
| York Springs, PA | 1,028 | 61% | 27.8% |
| Whitewater, KS | 1,028 | 29% | 40.6% |
| Garden Plain, KS | 1,028 | 44% | 8.3% |
| Harmony, MN | 1,028 | 50% | 3.1% |
| Primghar, IA | 1,030 | 70% | 44.8% |
| Markham, TX | 1,029 | 55% | 13.5% |
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