Munib Kassem (12) and Wyatt Sloan (12) scored a goal apiece to lead the Hilltoppers to a second road win.
Early in the first half, Nate Huang (12) found space down the right and fed Kassem for his second goal of the season. Masters equalized later in the half. With about 20 minutes to go, Sloan picked up the ball and unleashed a swerving drive from 25 yards.
Michael Illuzzi (11) made 8 saves.
Hopkins next plays GFA in its home opener on Wednesday.
Hopkins is a private middle school and high school for grades 7-12. Located on a campus overlooking New Haven, CT, the School takes pride in its intellectually curious students as well as its dedicated faculty and staff.