That's a really interesting claim, can you give an example of a question that could reasonably be on a K-12 exam that a frontier model can't answer?
There's also home ec, wood shop, metal shop, auto shop, sculpture, choir, theater arts, marching band, phys ed.
I know how a violin works yet I would never claim to know how to play violin and if you put one in my hands it would become painfully clear that I know almost nothing about violins other than some trivia.