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For the most part, I think the point of school - elementary through college - is to learn how to learn. Yes, we try to teach students things that will be useful in their careers but I think it's more important to teach students things that are hard. It is the process of learning to internalize difficult concepts that makes you 'college ready'.

If you don't use that knowledge for your profession, then yes you will forget it. However, if you don't use it for your profession, it doesn't mean learning it was useless. I would be more worried if he still sucked at math after preparing for the test for a semester or two.

I have a degree in Chemistry and yes, that knowledge is slowly slipping out of my mind. However, the skills I learned while learning chemistry - logical thinking, ability to memorize and recall, building a mental model of abstract concepts - these stay with me.

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