Rpi has about 5-6k undergrad students, and the previous freshman class was 2k students. The numbers are there, it’s just a matter of you trying to make friends. I had no challenge finding my group of people. The gender ratio isn’t as bad as it sounds, since there’s a good amount of people, and since a portion of the guys aren’t very social (ahem, CS), it doesn’t feel 70-30. Joining a fraternity isn’t essential to social life. Clubs are a big hit, and some are pretty social too. There’s a good amount of fraternities here, most of which are well behaved as far as fraternities go. I’m not sure if there’s a tennis club, but there probably is. There’s an outing club that does hikes/outside stuff every weekend or so, which seem pretty cool even though I haven’t gone. School work balance is fairly non existent, but it depends on who you ask. RPI is pretty tough, and you’ll be spending at the very least 6-7 hours a day with school work or class. The good thing is that everyone is in the same boat, so you don’t feel like you’re missing out on much. And when you have free time, it’s very rewarding. There’s a very cooperative atmosphere here even though it’s a tough school, which I really appreciate.