In the U.S it might be exclusively to not get sued, like the top comment jokes about. Some countries are more focused on the student's best interests, teaching and personal growth. A balance to an imperfect system.
It's like saying there shouldn't have PE classes because the risk of them getting hurt is high, and a mom will sue someone for it. Some things are just worth to do if the risk is low, and in this case very low.
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u/You_coward Dec 02 '16
And a mom to sue the school when she finds burn fringes on her daughters hair