I have always had the opposite problem.

In grade school had to go to all these classes during recess to get different pencils, pens, grips, wiring methods.

The reason was my hand could not keep up with my thoughts. So the result was skipped words, and merging of two words and all these other things.

I am still poor at spelling, but the solution was typing. Once I started typing well my grades went up and I no longer found doing the work a chore.