Criteria for Allowing New Team Members

[Shrub]

Hi! Thanks for your attention. (sorry if this is in the wrong category!!!)

I've recently become very curious if teams have certain criteria for allowing new team members to join. I know a few Minnesota teams abide by MSHSL standards (drug free, making progress towards graduation) or make up their own that are similar. Today before school a teammate pointed out that Miss Daisy had a form prospective team members would fill out online.

Our team tries to allow all members who want to join robotics to join (and we have so far) even if they have subpar grades. All conflict/drama is quickly stopped or confronted until the root of the problem is found. Thankfully, there have been no incidents so far of team members leaving the team unless they graduate high school or no longer have time.

Here comes my question: What criteria do other teams have for allowing members? Our team is trying to set up an FTC at a local middle school and I'd like to have some guidelines for who can join and/or when they would have to leave the team (as mentioned before, due to drug use, fighting, or no progress towards schoolwork). Plus, it'd be nice to have more concrete guidelines for the new influx of freshmen next year for our high school FRC and FTC teams.
Also, if teams have ever (for lack of a better word) removed members, how would a team best be able to that? I'm interested in seeing what others have to say