MTC, I'm not really sure how strong Dartmouth is either, but I've played some other teams in your section.
Brown had an EXCELLENT team this year, and Harvard had VERY strong guys, but just so-so girls. We played Northeastern in the fall, and they were just okay. Yale seemed pretty good, though we never played them.
Brown and Harvard were definitely for real, though, but I can't tell how deep the New England section is. You should definitely try to get your team down to Syracuse this year for a tournament (they host a big one in the spring). Good luck.