I finished the school shopping for my two boys the other day.
I managed about 98% Made in North America, too.
I was unable to easily find folders/pee chees and sketch books made here in the USA, but those were made in Canada, and I find that acceptable.
We had to buy an alternate brand of glue from the typical Elmer's, because good ol' Elmer's is made in China. The other brand was less expensive and also made in USA.
The only failure we had was the glue sticks. I didn't go back to change them out, but read the back (my oldest son picked these up) and these ended up being made in China.
All the Crayolas were made in USA, at least the crayons themselves. The watercolors were made in China, so I chose the "off" brand at a slightly higher price.
I'm pretty proud of that and hope that we can continue with clothing, although I have little control over what their grandparents buy for them.
Even if there aren't any school supplies that I know of made here in Astoria/Oregon, I can still buy American.