Tomoko: Good to hear from you! And looking forward to seeing you on SWY!
About what to prepare for the education course, there is nothing OFFICIAL that needs to be done. I asked Tamae to give out my email in case some PYs wanted to get a head start and study about some things. I haven't finished planning all the contents of the seminar, but one thing PYs can do to prepare is be familiar with education topics in their own country. You wiil share some information about issues with PYs from other countries, so if you are able to express ideas about issues in Japanese education in English, that will be a great help. Also, if PYs try to get some information about education in other countries that will be on the ship, that would help them be prepared too.
If you want to know more information later (after I further plan the contents of the seminar), keep in touch and I can tell you more. I know that for some JPYs it will be the first time to discuss such issues in English with people from other countries, so I just want to give everyone a head start so that they can be more confident for doing this!