Reply To: Chabad? Most non religious Jews are not halachikly Jewish.

Chossid; you wrote, “the fact is, only Jews are allowed to be in the program.” THAT is exactly the issue: how do the program directors know who is Jewish? Do they ask each participating teen if they are indeed Jewish? Is that how it works in halacha? I seriously doubt that the program directors convene a beis din to pasken on each participant? If one of these kids become frum, would you let your own son or daughter marry them — just because they say they’re Jewish?
The OP’s question is totally legitimate.