The wt suggests that studying with the kid may make the parent eventually want a study too.
... seriously?!! In what situation would any worldly parent allow some stranger from a werid cult to come jnto their house and convert their children? And what child would want that either? Have you ever heard of this happening?
This does happen sometimes, especially with rebellious teens. The parents may think that some religious education will help straighten out their kid (even though they aren't religious). Or it could be that they are related to JWs, or were raised JW but never got baptized, or they could be inactive.