Why does the school system insist upon teaching the most utterly useless things?!

We need to know about taxes and mortgages and actual relevant things! Not how mold forms in a confined space or how newton had a dodgy apple tree. Yes i understand why BUT I DONT ACTUALLY GET WHY. And another thing wjy do they make us plan out our entire life from year ten upwards? They narrow our lives down to such rediculous jobs, and being a resident in somerset the only choice is farming or similar tedious bs. WHY DOES THE EDUCATIONAL BOARD **** US OVER

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