Ask HN: Recommendations on a simple static site generator?

My research group wants to put up a website. I'm the only person in the group who knows HTML, so this would fall on my lap, except I'm leaving soon, so they need something other people will be able to maintain. My thought was to use a static site generator that future students could then add pages too without necessarily needing to play with the templates. However, I have an awkward set of requirements.

1) The site must be static. There's no ruby/perl/php/python on the server.

2) The software must run well under Windows. Future students will need to be able to install the software under Windows on their own. The students will have a passing familiarity with the command line, but I'd prefer if they didn't need to deal with Windows PATH variable issues. Something with a dedicated Windows installer would be a definite plus.

3) The system must be relatively simple to run. Future students will have some programming experience, most likely Fortran or Python, so they're capable of handling some complexity. On the other hand, since this is a side project for them, it'd be nice if they didn't have to learn a new programming language.