Text books: Themen, Aspekte, Mittelpunkt, Oberstufenbuch, plus own materials (literature, newspapers, DVDs)
GLS is test center for TestDaF. The German courses at the GLS Campus Berlin are accredited by EAQUALS. EAQUALS inspects language schools: inspections are rigorous and repeated every 4 years. GLS is accredited by the Swedish Ministry for Education and Research, i.e. Swedish students get CSN grants for GLS German courses.