This platform for a course in astronomy/astrophysics is run by Günther Osswald, a secondary school teacher for physics and mathematics in Munich/Germany. The material consists mainly of a coherent online script including exercises. The solution of the problems are given by the students, uploaded in form of a scan of the hand-written work.
Detailed information about the curriculum you can find in German here, page 42 - 46 (official Bavarian curriculum for grade 13 course in Astronomy (G9)).
There is an initiative of Ugandan educators to take part in the course and translate the materials into English. read more...