This posts reminds me of an older sister in our Hall who studied with a young boy. The parents finally allowed him to go to a meeting with her one Sunday. During the meeting, someone threw a rock through the window above his seat and the falling glass cut his ear. The poor older sister had to take the kid home and explain what happened.
The kid never came to another meeting and the study ended but I'm sure there are plenty of parents out there who think a kid should have some kind of religion in their life but don't know how to go about it themselves. If someone came to their door offering them a free bible study for their kid, they'd jump at the chance to get him or her off their hands for a few hours. Especially an overwhelmed single parent.