Why do some colleges want to see all test scores?

You focus on raising your score in math, and briefly review verbal. How was your essay score? Schools that want all scores are probably fine with a couple of tests, three tops. They won’t be impressed by any more than that. I would say that two tests are the goal, as a huge number of students do the tests twice. Everyone can have an off day and not do as well as they should have.

Why all test scores? I assume it’s because they want to see how many times a student took a test rather than just selecting the superscores they want to send. I assume they probably aren’t impressed with students who test many times and only manage to nudge their scores up a tiny bit. Some might disagree, but generally, less is more when it comes to test scores.