I don't think this is true, at least in the UK. The BBC computer literacy project meant that there were BBC Model Bs in every UK school, with tie-in educational

I don't think this is true, at least in the UK. The BBC computer literacy project meant that there were BBC Model Bs in every UK school, with tie-in educational materials. In the early 90s my entire class at a run of the mill state primary school took turns pair-programming LOGO on the school's BBC Micro. I don't think you can get more ubiquitous than every single human having programmed a loop and subroutine.