One of my students thinks he's found where PTC offers Prime 3.1 to students without expiring in 30 days. As far as I know, he's talking about Express. He says it still works, more than 30 days after being downloaded, but I think he's misunderstanding.
Does PTC offer any kind of download for college students other than Express? I was able to generate some enthusiasm today in class with an impromptu Mathcad demonstration. They even asked for an additional Mathcad help session outside of class and asked where they could download it, but the interest waned when I told them they would have to pay for it after 30 days. The same old problem.