Yonkers's School 21 is a Public School, Magnet school Serving students in Grades PK-06.
55.70% of students at this school are Hispanic
| Grades Offered | Grades PK-06 | 
| Total Students | 456 | 
| Student:Teacher ratio | 20:1 | 
| Gender % | 57.02 % Male / 42.98 % Female | 
| Total Classroom Teachers | 23.00 | 
| Student Population at School 21 by Grade |  | 
| Magnet School |   | 
| Charter School |   | 
| Shared School |   | 
| Title 1 Eligible |   | 
