Also... race car driving schools teach knowledge that isn't exactly always appropriate to new 15-16 year old drivers. I'm sure that a BMW Z4 roadster is more road responsive and nimble (and easier to dodge an accident) than a 10 year old Chevy S10 Blazer, but what are you likely to give your new driver?
As someone who attended my first driving school at 17 and started autocrossing less than a week after my 18th birthday, I've got to take issue with that. There is nothing about basic high performance driving that doesn't apply to driving on the street. Using your example, it would take more skill to avoid a wreck in the S10 than in the Z4, so why give your kid a double handicap by not teaching them how to really drive? If skills like skid control, looking ahead, and throttle/brake modulation were part of compulsory drivers' ed., instead of harping on meaningless BS like "10 and 2," when you're required to use your headlights, or how far before a turn/lane change you have to turn on your turn signal (all topics I remember from drivers' ed), there would be a lot fewer accidents and people would be much better drivers.
I'd give 8-4 an honest evaluation. With modern power steering, the supinated arm position just isn't that big a deal IMO.
I do agree with that. Like I said above, rigid "rules" like "10 and 2" or "8 and 4" are completely meaningless. Your hands should be in a position where you're comfortable and can react quickly if necessary.
fwiw, I'm 5'1" and my hands are generally at ~9 and 3. I was taught that when approaching a turn, you should adjust your hands so that they will be in the same position (ie: 9-3) when you're making the turn. I'm not a fan of shuffle steering. If my car starts to oversteer and I have to go from making a right turn to full lock to the left, I just can't do it fast enough with shuffle steering and I don't know many people who can.