Classes take place on 30 Saturdays from September through May from 9:30am to 12:30pm at the Diamond Middle School in Lexington. Some  afternoon attendance for faculty meetings is required. GSSB currently teaches more than 480 students from pre-K through 12th grade. Our advanced students have the opportunity to take  internationally recognized standardized tests – from the basic IVA A2  through the advanced DSD exams (= Deutsches Sprachdiplom) for those  students who perform at the highest language proficiency level.