If I had my way, I'd have each applicant stripped, x-rayed, confined to an acoustically isolated faraday cage, and sit down for an examination generated and marked by an AI system.
I've seen too many enabled people trying to game the system.
That still won't help and might make things worse.
By the time a rich student reaches college selection, he has a number of structural advantages over a poor student.
Let's take the SAT exam in the US, for example. Many poor students take the SAT effectively cold--the idea that you can prepare for that test and that paying money to prep is a good idea are simply not in scope. Whereas, a rich student is simply going to assume that obviously you prep for a test like the SAT and of course you spend money to do so.
That's not far off from what I had to go through the last time I took an education-related standard exam. Nothing but my cloths and ID were allowed into the room and they had a quite through check to make sure of it.
I've seen too many enabled people trying to game the system.