Dennis B O'Brien Elementary School
| Name | Dennis B O'Brien Elementary School |
| Grades | Class PK to Class 05 |
| Address | 16 MINERAL SPRING DRIVE |
| City | Dover |
| School District | Rockaway Township School District |
| County | Morris County |
| Zipcode | 07801 |
| Phone No. | (973)361-7330 |
| State | New Jersey |
| Suburb | Large |
| Students | 310 |
| Teachers | 30 |
| Student Teacher Ratio | 10.2 students per teacher |
| Charter School | No |
| Magnet School | N/A |
Dennis B O'Brien Elementary School is located at 16 MINERAL SPRING DRIVE in Dover city of Morris County county in New Jersey. This school comes under Rockaway Township School District. You can call them at (973)361-7330 for more details. This is not a magnet school. Total three hundred ten students from class PK to class 05 study in this school who are taught by thirty teachers. This is not a charter school. The student teacher ratio of this school is 10.2.