Also a homeschooler...
I taught my son to type the way I was taught to type by my grandfather:
Split the keyboard in half. Left hand = Left side. Right hand = Right side. Use all your fingera. Now type.
I avg. 80-120 a minute.
My 9yo son averages 50-70
Do we look at the keyboard? Yep. Can I type without looking at the keyboard? It drops my speed down to about 50wpm, unless I'm typing English, in which case it drops my speed nothing at all (I just use my short term memory and read and type as I go). Not looking at the keyboard is for people who are reading something else and copying it. It's pretty valueless except for a certain narrow window of careers or for those with no short term memory to speak of. In which case, it's a skill that one can pick up pretty quickly. Even so; scanners and conversion software and digital files and voice recorders have rendered the skill into near obsoletion.