Mercy High (MHS) Class of 1974 Alumni List

Help us Update the Mercy High 1974 Class List by adding any names missing from the list below:

More 1974 alumni from Mercy HS Riverhead, NY have posted profiles on®. Click here to register for free at® and view other 1974 alumni.


The students that went to school at the Riverhead high school called Mercy High School and graduated in '74 are on this page. Register to add your name to the class of 1974 graduates list.

Mercy High School alumni can relive their experiences from high school by sharing memories and pictures, reconnecting with those alumni listed, and more.