Looking at this particular case, I'd say the experience would have been much better if the teacher had been an experienced Wikipedia editor or had contacted one of the projects that deals with this sort of thing ahead of time to put them in touch with a mentor editor. The article mentions that seniority is important (I've never found that to be the case), but what's actually important is understanding the kind of content that Wikipedia is looking for. In this case, the reversions were mostly because of "original research" violations, where the student synthesized new opinions out of the sources. This is something you'd do if you were writing a high school report on a topic, but on Wikipedia you're really only allowed to summarize what the sources say. Having someone who understands that around would have helped both student and teacher understand why the material is being removed, and how it could be improved if they still wanted to contribute to the article.