A High School located in Williamstown, MA with grades 7-12 and around 600 students. MG has a reputation for having strong academics and sports teams. Downsides are the shitty weather of the Berkshires and the fact that there is NOTHING to do socially besides attend sporting events, get drunk/high in sketchy places, or sit in a house and drink tea.
Aaron: Oh, you go to Mount Greylock?

Bob: Yea man it sucks. I have so much homework and there are no parties at all.
by Xstudent November 24, 2011
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