You seem concerned about the intrusion of the tuition committee into peoples personal lives. I’m not trying to belittle that but point out how much worse it is when vicious Shadchanim find out that someone exists (may Hashem protect us all from them and their wicked tactics).
A family only needs to deal with a tuition committee (and again, I understand that it may be very uncomfortable) once they decide that they want to send their kids there and ask for a scholarship application. If they feel that the questions are too personal they’re welcome to not fill it out and apply elsewhere.
Once an evil shadchan gets ahold of your name there’s nothing you can do. Even after you tell them that you’re not interested in working with them and give them no permission to make calls on your behalf (the polite ones will tell you that it’s too bad because that’s not how the system works while the rude ones won’t even acknowledge your concerns) they’re going to call everyone you know and ask the most personal questions (and trust me, it’s not limited to finances) under the ruse that ???? ??? doesn’t apply to shadchanim.