The debconf template in debian-edu-install was recently changed. You are listed as the last translator, and might want to have a look at the source in the debian archive to provide an updated translation.
The project page on alioth is URL:https://alioth.debian.org/projects/debian-edu/, and the .po-files are available from URL:http://cvs.alioth.debian.org/cgi-bin/cvsweb.cgi/src/debian-edu-install/debian/po/?cvsroot=debian-edu (and of course in the source of the package in the archive. :)
This is the current stats from CVS:
ca.po: 30 translated messages, 6 fuzzy translations. cs.po: 36 translated messages. da.po: 30 translated messages, 6 fuzzy translations. de.po: 30 translated messages, 6 fuzzy translations. el.po: 13 translated messages, 6 fuzzy translations, 17 untranslated messages. es.po: 5 translated messages, 1 fuzzy translation, 30 untranslated messages. fi.po: 30 translated messages, 6 fuzzy translations. fr.po: 28 translated messages, 8 fuzzy translations. it.po: 30 translated messages, 6 fuzzy translations. ja.po: 30 translated messages, 6 fuzzy translations. lv.po: 13 translated messages, 4 fuzzy translations, 19 untranslated messages. nb.po: 36 translated messages. nds.po: 13 translated messages, 6 fuzzy translations, 17 untranslated messages. nl.po: 36 translated messages. nn.po: 30 translated messages, 6 fuzzy translations. pl.po: 30 translated messages, 6 fuzzy translations. pt_BR.po: 30 translated messages, 6 fuzzy translations. se.po: 13 translated messages, 6 fuzzy translations, 17 untranslated messages. sv.po: 30 translated messages, 6 fuzzy translations. tr.po: 30 translated messages, 6 fuzzy translations.