Language changes. Teaching an entire script to be able to read translated documents when there are practical skills that could be taught instead is silly.

We don't teach old English anymore, even though there's a huge amount of our cultural history contained in it.
We don't even teach people about the eras when we used to use "f" in place if "s", and that's right in the middle of the constitution.

Can you read the original magna carta? America would not be unique amongst English speaking nations in having issues dealing with language drift.