So, for example, if a child is labeled as having a learning disability, it has very concrete consequences for the kinds of services and potentially accommodations that child will get.
The world supports a multi-million dollar industry of intelligence and ability research, but it devotes virtually nothing to determine why this intelligence is squandered by engaging in amazing, breathtaking acts of stupidity.
In other words, if a teacher only teaches in one way, then they conclude that the kids who can't learn well that way don't have the ability, when, in fact, it may be that the way the teacher's teaching is not a particularly good match to the way those kids learn.
ACT and SAT each have their own parts of the country. The GRE has its lock on graduate admissions. And so, one could blame the companies, but really, economically, they have no incentive to change things very much because they're getting the business.
If there's going to be an SAT, it's probably practical to invest in a book or perhaps in a course, but I'm sorry to say, I went to some classes that my kids took and it was clear in school that what they were doing was just SAT training.