Folks, I moved this topic over to home school teams.
Yes, SSS, there are a number (probably 10-12) of home school groups that have organized six-man football teams. These groups are popping up (in various sports); there have been a couple that have existed for years ... FEAST in San Antonio and HCYA in Houston (the latter does play sixman football); in some sports such as basketball and track/cross country, they are pretty solid groups (competing at the UIL 4A-5A level). Some of these groups have affiliated with T-CAL (Texas Christian Athletic League) and some play independent.
I even think there may be one or two crowded field football home school teams in the DFW and/or Houston areas. It's much tougher to get into that level of play, but I expect that some groups will go there in the next several years.
As for eligibility rules, if the group is not affiliated with a league, they're on their own. Most try to set up eligibility rules similiar to "brick-and-mortar" high school leagues (TAPPS, UIL), but if you schedule them, you need to verify their eligibility rules. I've advised a couple groups that are forming to carry copies of their players' birth certificiates with them.
The old joke about home school teams is that the eligibility rule is that the players are asked to keep their wives and children at home during the games ... not really true, but good for a chuckle. It's just a hard thing to determine if that 18 year old boy actually finished his high school studies last year or gosh, he turned 19 on September 3rd and he didn't play that one year a couple years back, so let's let him play this year.
What I'm saying is that, yes, it is very possible, perhaps very easy to pass a few ringers into the mix with home school teams (but experience has shown it can happen in the "brick-and-mortar" schools, too). But I've seen most home school groups are trying to be good actors in this regard.
The only advice I give to schools thinking about scheduling home school groups is to know who you're dealing with; if you (as a school AD or administrator) don't want your school playing these groups, that's your call (and there are a number of public schools who do not wish to schedule private schools for various reasons, some justifiable and some not).
But then again, that may not be a bad bit of advice even with some "brick-and-mortar" schools ...