I think test prep helps a ton for standardized tests. It familiarizes you with the subjects and testing format. Which means when it's time to do the real thin

I think test prep helps a ton for standardized tests. It familiarizes you with the subjects and testing format. Which means when it's time to do the real thing, it's all old hat. The article only mentions the average score increase, which is useless without a distribution. Because a great many kids have no interest in improving and are just being forced to do test prep by their school and parents. It won't help kids that don't care.