[yequalsx]

Actually it's not a complicated tool with the free form input, integration with Wolfam Alpha, and templates for the commands used. Also during every test I would correct any command that didn't execute properly.

Your point originally was that it requires too much work on the part of teachers/administration to update the curriculum for 21st century. I'm pointing out that this view while true in some cases may not be true in the present situation. It's easy to ascribe to laziness why things are done in education the way they are to someone not involved in teaching.