| Index | Milliken | Colorado | National |
| Average Test Scores | 25% | 39% | 48% |
| Student/Teacher ratio | 16:1 | 17:1 | 16:1 |
| Total public schools | 3 | 1,426 | 79,221 |
| Total private schools | n/a | 384 | 24,874 |
| Total post-secondary schools | n/a | 138 | 7,963 |
| Index | Milliken | Colorado | National |
| Completed 8th grade | 82.0% | 87.9% | 84.3% |
| Completed high school | 79.5% | 87.1% | 83.0% |
| Completed some college | 54.4% | 69.3% | 59.4% |
| Completed associate degree | 30.0% | 47.1% | 38.5% |
| Completed bachelors | 18.9% | 38.7% | 30.3% |
| Completed masters | 5.8% | 14.3% | 11.5% |
| Completed professional degree | 0.8% | 3.9% | 3.3% |
| Completed doctorate | 0.0% | 1.6% | 1.3% |
There are a total of 3 public schools, n/a private schools and n/a post-secondary schools in Milliken. Using the proficiency score averages, the average test scores for Milliken, CO schools is 25%. The average student to teacher ratio is 16:1. In Milliken, CO, an average of 82.0% of students have completed 8th grade and an average of 79.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Berthoud, CO | 8,879 | 59% | 22.1% |
| Mead, CO | 5,085 | 57% | 18.2% |
| Eaton, CO | 5,858 | 51% | 6.9% |
| Windsor, CO | 24,324 | 50% | 4.8% |
| Longmont, CO | 99,360 | 41% | 14.5% |
| Milliken, CO | 8,053 | 25% | 48.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Cushing, OK | 8,053 | 36% | 24.5% |
| Altoona, WI | 8,056 | 44% | 7.6% |
| Fort Belvoir, VA | 8,048 | 71% | 48.4% |
| Middletown, KY | 8,048 | 58% | 20.8% |
| Ruidoso, NM | 8,058 | 30% | 38.5% |
| Milliken, CO | 8,053 | 25% | 48.3% |
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