Bishop McGann-Mercy Diocesan High School
| Bishop McGann-Mercy Diocesan High School | |
|---|---|
| Address | |
1225 Ostrander Avenue , , 11901 | |
| Coordinates | 40°56′8″N 72°40′19″W / 40.93556°N 72.67194°W |
| Information | |
| Type | Private, Coeducational |
| Motto | Serve the Lord with Gladness. |
| Religious affiliation(s) | Roman Catholic |
| Established | 1956 |
| Founder | Sisters of Mercy |
| Closed | 2018 |
| Dean | Charles Bender |
| Principal | Deacon John Hogan |
| Campus Director | Mr. Prochilo (ministry) |
| Faculty | 53 |
| Grades | 7-12 |
| Enrollment | 435 (2008) |
| Average class size | 20 |
| Color(s) | Green and Gold |
| Song | Mercy Fight Song |
| Team name | Monarchs |
| Tuition | $9,400 (2015-16) |
| Website | www |
Bishop McGann-Mercy Diocesan High School (formerly Mercy High School) was a Roman Catholic high school in Riverhead, New York on Long Island. It was operated by the Roman Catholic Diocese of Rockville Centre. The Diocese closed the school in 2018.