:I think the American section of it is a high school now, as well as everything else before that. I don't know too much about the American section of the school, as I was in the British section (there was also a Dutch section, supposedly). The British section was - and still appears to be - a primary school only. It seems to have changed a lot since I was last there in 1993. 
 :I think the most relevant website is this - http://www.isgdh.org/