SCHOOL 21
| Name | SCHOOL 21 |
| Grades | Class PK to Class 06 |
| Address | 100 LEE AVE |
| City | Yonkers |
| School District | YONKERS CITY SCHOOL DISTRICT |
| County | Westchester County |
| Zipcode | 10705-4797 |
| Phone No. | (914)376-8435 |
| State | New York |
| Suburb | Large |
| Students | 422 |
| Teachers | 20 |
| Student Teacher Ratio | 20.6 students per teacher |
| Charter School | No |
| Magnet School | Yes |
SCHOOL 21 is located at 100 LEE AVE in Yonkers city of Westchester County county in New York. This school comes under YONKERS CITY SCHOOL DISTRICT. You can call them at (914)376-8435 for more details. This is a magnet school. Total four hundred twenty two students from class PK to class 06 study in this school who are taught by twenty teachers. This is not a charter school. The student teacher ratio of this school is 20.6.