| Index | Castleford | Idaho | National |
| Average Test Scores | 32% | 47% | 48% |
| Student/Teacher ratio | n/a | 17:1 | 16:1 |
| Total public schools | n/a | 446 | 79,221 |
| Total private schools | n/a | 83 | 24,874 |
| Total post-secondary schools | n/a | 34 | 7,963 |
| Index | Castleford | Idaho | National |
| Completed 8th grade | 69.4% | 85.7% | 84.3% |
| Completed high school | 68.5% | 84.8% | 83.0% |
| Completed some college | 50.0% | 62.4% | 59.4% |
| Completed associate degree | 21.3% | 35.6% | 38.5% |
| Completed bachelors | 9.3% | 26.2% | 30.3% |
| Completed masters | 0.9% | 8.4% | 11.5% |
| Completed professional degree | 0.9% | 2.6% | 3.3% |
| Completed doctorate | 0.0% | 1.1% | 1.3% |
There are a total of n/a public schools, n/a private schools and n/a post-secondary schools in Castleford. Using the proficiency score averages, the average test scores for Castleford, ID schools is 32%. The average student to teacher ratio is n/a. In Castleford, ID, an average of 69.4% of students have completed 8th grade and an average of 68.5% have completed high school.
| City | Population | Avg. Test Scores | National Avg. |
| Filer, ID | 2,845 | 44% | 8.1% |
| Buhl, ID | 4,462 | 35% | 27.8% |
| Castleford, ID | 181 | 32% | 33.3% |
| City | Population | Avg. Test Scores | National Avg. |
| Marion, ND | 181 | 60% | 25.0% |
| Artesian, SD | 181 | 50% | 4.2% |
| Litchville, ND | 181 | 45% | 6.3% |
| Waterloo, SC | 181 | 37% | 22.9% |
| Carpenter, WY | 181 | 50% | 4.2% |
| Castleford, ID | 181 | 32% | 33.3% |
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