I expressed myself rather carelessly: "officially included" is wrong - "officially recommended" is the fitting way to express it. In Germany, the "Institute for Cinema and Film Culture" (Institut für Kino und Filmkultur) is assigned the task (by the Ministries of Education of various German "Länder" (states) and by the so-called Federal Agency for Political Education) of recommending films to teachers for inclusion in their courses and of preparing teaching materials for them. FÅ is on their list.
http://www.film-kultur.de/partner.html
(The same task in Denmark has been carried out by the Danish Film Institute:
http://www.dfi.dk/dfi/undervisning/aamaal/index.html)
The Senator for Education of the state of Berlin has published guidelines, recommendations and material for teachers teaching on gay/lesbian rights, and FÅ is recommended on that list too:
http://www.berlin.de/imperia/md/content/lb_ads/gglw/veroeffentlichungen/lesbische_und_schwule_lebensweisen.pdf
So it's not that every German kid would have to watch FÅ, and I didn't want to make it look like that. But the film is, so to speak, officially recognized and recommended for use in school by teachers.