Audrey T.
Yelp
Howl at the Moon is the best going out spot that I know in Boston. It's definitely at its best term time (since it's mostly filled with Junior and Seniors in college during the school year). It is a cheap and fun night if you do it right.
I recommend "winning a party" for yourself and your friends. Here's how it works: You can sign up online, via email, or via text to get free admission and free food for specific hours (9-11 on Thursdays, 7-9 on Fridays and Saturdays, and different times on holidays) for yourself and as many guests as you want. Anyone who gives your name at the door at the appropriate time (given they're 21+) gets free admittance and free food until the given time. You are guaranteed to "win" if you sign up. As the one throwing the party, you also get a few freebies (a sticker, a water bottle, and a beer cozy), and potentially earn cash (if 25+ people come and give your name, you get a $25 gift card, and that amount increases if you bring more people).
Once inside, enjoy decent drinks for cheap ($2 for beer or $4 for a basic cocktail with their well/house liquor. Their buckets for splitting are decent and pretty well priced, but the smaller sizes are tiny with all the ice, so I recommend getting the largest size to split with friends if you do that). On the ground floor there's usually a solid live band playing less dancey (more pop or throwback) music. People tend to dance and drink by the band until about 11.
Once the club downstairs opens (I can't remember if that's 10 or 11) I recommend going to get your stamp from the club downstairs so you can move to the dance floor whenever you want without waiting in a separate (and in winter, long and cold) line for the club. In my experience, the dj downstairs is always good, playing fun, familiar, and dance-y tunes. The people downstairs also tend to be fun and dancey and young. There's a bar downstairs too. Don't get your drinks there- they exponentially more expensive.
If you bring a coat, they also have coat check downstairs for about $5 + tip. It's better to go without one, if possible, because the line can get long.
One final tip, take advantage of the free tap water at the bar downstairs. If you're dehydrating from alcohol and dancing, it'll help, and it's always free if you ask for tap water.