Like you I occasionally make mistakes but try to spell properly. I cringe at text message spelling. To do away with spelling when children are young is ludicrous. Children learn and retain things when they are younger.
I'd like to see the three R's return as these form a solid base for further education. I made my girls learn multiplication when their school no longer taught it and always checked their spelling and got them to learn words they had spelled incorrectly.
They all practiced cursive writing at home once they started to learn it at school. They complained at the time but appreciated it as they got older.
Your idea of spending monies on home schooling would certainly save a lot of money but there would be a lot more unemployed. Maybe showing your idea to the powers that be might shake the system up and get it back to teaching kids things they will always need in life. In your country and mine.