Andy gets it.  You don't.  School isn't about the minimum you have to learn, it's about offering possibilities for life.  As an A&S student (for those who remember what that is), I wasn't allowed to take auto mechanics, but had I taken even one semester of it, no doubt my car repair bills would have been lower over the years, and I would have learned sooner when to trade in my cars, and when to fix them, saving many thousands of dollars over the years.  And ... you can still change the oil yourself, even in today's cars.  And although I don't change my own, I have found it useful to pull the dipstick and check, on occasion.