My lovely girlfriend is a primary school teacher. She teaches kids that are between 11–13 years old.
When I look at the curriculum that she needs to teach her students, the curriculum doesn‘t differ much from the education I had at that age… Which happens to be a little over 20 years ago.
Some things have most definitely improved:
(1.) Education is more interactive
(2.) The kids learn far more languages than we use to do at that age