Our team stresses quality over quantity - if you don't contribute to the team, our teacher will kick you off. Malvern Prep is a fairly small school as it is (~440 people in the entire HS), with a lot (too much IMHO) of emphasis on the achievements on our athletic teams, so our team was fairly small this year and will be even smaller next year.
This year:
- Freshmen - 1
- Sophomores - 3
- Juniors - 4
- Seniors - 7
We're going to be hurt a bit by graduation, but we aim to increase recruiting a bit and we also feel that we could build a robot just among us underclassmen as is. Sometimes, however, I do worry about the team going out of existence due to lack of interest - there definitely aren't enough sci/tech activities at our school, and the Malvern community seems to emphasize sports over science.
That being said, I prefer having a small team - everybody on the team contributes something, and there aren't any "hangers-on".