Hi Ralf, Interesting timing, I just started some translation work this night. :)
if you ever tried the default portal http://tjener.intern recently, youmight have noticed that there is a Skolelinux page now instead of apache default.
Or actually coming from a Spanish browser you just get "please select your version - index.en.html or index.no.html" (I think something like that).
http://svn.debian.org/wsvn/debian-edu/trunk/src/debian-edu-config/ var/www/is the place where you'll find its English, Norsk and German version.
I am planing to do Spanish if nobody else volunteers who knows the language better than I do. I am also currently working on translating the LDAP Webmin tool.
Patrice