What did the Constitution directly say when it mandated the Military? What did the Constitution directly say when it mandated the Public School?
That actually was the comparison you used!
In your next comparison, you might ask me if I would abolish the military since I think the leftwing cesspool of PBS should not be publicly funded.
You mean when it tried to prevent the establishment of a permanant standing army as we have now? The Founders absolutely distrusted standing armies. The Constitution only supported militias and a standing navy. I believe what is done to get around that is that a portion of the Militia (the collection of able-bodied men) was "called forth" long ago, and per the Constitution Congress re-appropriates money to keep it called up every two years.
What did the Constitution directly say when it mandated the Public School?
Although the Founders individually promoted public education, they appropriately chose not to make it a federal constitutional mandate. Instead, they wrote education into most of their state constitutions, and that has spread so that all state constitutions now have mandates for public education.