John L. Costley Middle School
| Name | John L. Costley Middle School |
| Grades | Class 06 to Class 08 |
| Address | 116 HAMILTON ST |
| City | East Orange |
| School District | East Orange School District |
| County | Essex County |
| Zipcode | 07017-2912 |
| Phone No. | (973)266-5660 |
| State | New Jersey |
| Suburb | Large |
| Students | 449 |
| Teachers | 29 |
| Student Teacher Ratio | 15.6 students per teacher |
| Charter School | No |
| Magnet School | N/A |
John L. Costley Middle School is located at 116 HAMILTON ST in East Orange city of Essex County county in New Jersey. This school comes under East Orange School District. You can call them at (973)266-5660 for more details. This is not a magnet school. Total four hundred forty nine students from class 06 to class 08 study in this school who are taught by twenty nine teachers. This is not a charter school. The student teacher ratio of this school is 15.6.