Had a detailed look at the practicality of moving the Japanese placement tests (which are rather messy HTML, created a few years ago with Adobe GoLive) to Moodle XML, so that they could be imported into Moodle, which is a more robust platform for placement testing. There two reasons why this turns out not to be practical:

• The HTML is too ugly. I managed to make one of the two tests well-formed, after a lot of work, but there are overlapping tags in the other one which make it impossible to figure out what the intention really is; they accidentally look right (I assume).
• Many of the questions themselves are grouped into sets, with each set based on a single sentence which precedes them all. The Moodle XML format doesn't appear to allow anything other than discrete questions. Although the questions could be recast into discrete items, this could only be done by a human being (preferably with some understanding of Japanese), and it would be very time-consuming.

Wrote to MK to explain, and suggested getting a workstudy student to move the data manually.