If the parents didn't know their kids sneaked out of the house and were awakened by that dreaded knock on their door, can you even imagine the horror of losing a child?
Don't know if other passengers in the car they hit are doing ok. What they did by stealing that car was wrong, nothing can change it now, and saying they shouldn't have done it and they wouldn't be dead now will not change the fact that young people have died. Good Lord, have some sympathy for the parents who have lost their children. If you can't do that then you have a problem.
I guarantee these kids did know that 9x7=63. These boys attended school and were the students in a teacher's class. For all we know, they may have even been on the Honor Roll. These crimes are not always a product of a lack of education.