Information about enrollment at The Dana School is very limited. Enrollment numbers below were obtained from the Iowa Department of Education. It appears that the last year of operation for the school was 1959, before classes were moved to the East Green – Grand Junction School District.
| YEAR | K | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 1948-49 | 14 | 11 | 14 | 7 | 6 | 11 | 14 | 7 | 11 | 11 | 4 | 9 | 2 |
| 1950-51 | 15 | 10 | 13 | 8 | 12 | 8 | 5 | 12 | 13 | 7 | 9 | 11 | 3 |
| 1952-53 | 18 | 13 | 13 | 9 | 13 | 9 | 10 | 6 | 4 | 9 | 11 | 5 | 10 |
| 1954-55 | 12 | 14 | 17 | 12 | 10 | 10 | 10 | 8 | 12 | 5 | 5 | 8 | 12 |
| 1955-56 | 14 | 12 | 11 | 13 | 10 | 10 | 11 | 11 | 9 | 9 | 4 | 6 | 7 |
| 1956-57 | 19 | 13 | 11 | 11 | 12 | 9 | 12 | 12 | 9 | 11 | 8 | 4 | 6 |
| 1957-58 | 15 | 18 | 12 | 11 | 11 | 13 | 10 | 9 | 14 | 8 | 11 | 8 | 4 |
| 1958-59 | 11 | 13 | 19 | 12 | 12 | 12 | 14 | 10 | 9 | 13 | 8 | 8 | 8 |