Starting from a 40偏差値 (standard score), I'll help my son get into a prestigious hero school in another world.

Like a toxic parent, she forced her son to study for entrance exams. The result was that he failed all his exams and their family fell apart... In her despair, she was reincarnated into another world where "hero entrance exams" were booming!? With a renewed spirit, she'll get her son into a prestigious hero school this time!