<p>Actually, without CC, I’d know next to nothing about US admissions. It’s like my savior. And having spent some time reading other colleges’ boards, I think it’s safe to say the MIT board is one of the most reliable for information, precisely because so many well-informed people who actually have a relation to MIT are on here. I can’t speak for all of CC, because I haven’t remotely discovered it all, but the MIT board is very informative, and I’d venture a guess - very accurate.
In addition to some of the more high-profile colleges having excellent info on their boards, the SAT prep forum, while occasionally filled with some amazingly wrong ideas [as is every other board or forum or site on the planet, though], has some extremely qualified high school students aiding in prep and writing guides. I didn’t even know practicing for the SAT was a ‘thing’ until I started posting on CC. Though people just - took it.</p>