That's fine by me.
However, by ignoring, you are missing out on learning something from someone with 21 years experience on the matter both as a teacher and parent.
I believe it was the 2017 constitution that passed the law of 12 years free education. They did not stipulate grades although most took it as 1 to 12. Some parents in rural areas, where schools generally offer education from pre kindergarden to grade 9, used their 12 years free education to cover those years. The government then pushed it to 15 years to cover Kindergarden and one year of pre kindergarden for those that wished their kids to go to school at a younger age and continue to grade 12.