Jackie
There are a lot of different groups and organizations at Scripps (some are shared with the other colleges in the consortium). I'm involved in cheer and admissions. Cheer is a 5-C club and it is a lot of fun to meet women from other colleges. The athletic events are somewhat popular (we share our athletic team with Claremont Mckenna and Harvey Mudd). Since we are division 3 in most sports, it is not extremely competitive.
One of the great things about Scripps is that it is a pretty quiet campus and we only have 2 parties a year (although these parties are usually big and crazy). However, if you enjoy going out and having a good time, there are always parties at the other Claremont colleges. Basically, if you want to party, you can, but when you want a quiet place to sleep, you have that too. If you aren't into the party scene, Scripps also hosts many sober events (with free food!) such as carnivals, movie nights, and more.
Casey
There are SO many clubs and activities both on Scripps and on the other Claremont colleges. From political and social activism to arts/music to sports - you can probably find a club you'd be in to. There are a fair share of Scrippsies involved with Claremont-Mudd-Scripps sports teams (we are the Athenas) but not a lot of enthusiasm for athletics as a whole. We probably get most geeked about acapella concerts and dance recitals than for any sports games.
We also have guest speakers come often to campus and the event calendar is usually bursting. The problem is that most Scripps students are too busy to attend these events. That can be frustrating if you plan events but it's certainly not the worst problem in the world.
Dating at the Claremont Colleges usually involves hook-ups and short relationships. Long-term relationships do exist though, they are just not as frequent. The school is small, but not small enough to make things look hopeless when you break up with someone. There are definitely enough potential partners around Claremont, but yes, you probably will end up having some romantic overlap amongst your friend group. That is just inevitable at small colleges.
The party scene at Scripps is pretty non-existant but there are parties at the other campuses almost every night of the week. I think most people go out 2 or 3 times a week. Thursday and Saturday are the biggest nights. Weekday partying doesn't happen often but is available. There is alcohol at the parties, but there is also a lot of sober fun to be had too. Although some complain about Scripps' lack of a party scene, it can be nice to go out to the other schools, have fun, and then come back to the peace and quiet of Scripps' campus once you are done. Plus you don't have to worry about vomit in the toilets or red cup debris in your dorm.