Just a quick review, Greg. I am not commenting on the content itself, just on how it is delivered and on the design.
Miyagi: probably my most favourite, nice and user-friendly layout, easy to navigate; the colour combination (dark-green background, orange navigation) is a tad challenging, but the presentation is clear, elegant and appealing, as header tags and text are in the same colour. Some video links under "Events" are not linked.
Aichi: stylish front page, nice content presentation; the orange and yellow H tags under "History" are a bit difficult to read, the font set and the colours should be altered; the text boxes should be less colourful also (pastel colours perhaps); the other content pages on the other hand require a bit more styling (text and background colour white).
Kagawa: very appealing presentation of content, a bit more contrast however wouldn't harm: white background, white text background, the purple H tags and the logo need slight revision.
Disclaimer: the views expressed above are strictly personal, de gustibus non est disputandum. Given that time and resources in a university project are limited, I'd hire each of your teams without hesitation inorder to present their content on JREF.
Brilliant idea, congratulations to you and your students!