It is always sad when a child or young person is injured due to an accident. Having children of my own, I can sympathize with the pain the parents are feeling.
When I was a young person, I was taught to look both ways at least twice before crossing any street. There were four ways of getting to school safely: take the bus, walk, drive or be driven.
I was never allowed nor would I allow my child to ride a skateboard to school wearing headphones, dressed in dark, hard-to-see clothing, while crossing the street, whether in the crosswalk or not!
With that said, I guess the blame for these accidents somehow goes to the Marysville School District, Snohomish County, and the taxpayers who financially support our schools and county entities. The only negligence I see is the teaching and guidance of parents or persons responsible for their childrens’ basic and fundamental safety.
Look both ways twice. Look and listen to traffic approaching you.
Wear visible clothing. Ride with traffic, walk against it and do not ride toys to school or on the street. We built skate parks for that. I also would recommend wearing a helmet while riding a bike or a skateboard at all times.