I found the link (to the religious affiliation list).<quoted text>
Ctrl+F to find the text "religious affiliation" if you can't find such link.
Read? I found it, no problem, first try.
What I failed to see anywhere is any indication that the fact that someone has created a system that COULD aggregate a wide variety of information from a wide variety of educational institutions public and private means that the federal government has any intention of mandating the collection of anything.
In fact, a whole slew of very similar information is requested when students take the ACT. I don't know that there is anything mandating a response to any of the questions--but I would imagine most students respond to most of the questions. This is included in what is released to colleges with the ACT score. Most believe it is in their interest, in terms of admissions, to reply to a lot of questions about extra-curriculars, jobs, hobbies, parents education level and a whole lot of other stuff.
I would imagine that the College Board is among the potential clients for this particular group.