It does not depend on the location of your school whether you have a German or an international higher education entrance qualification, but on the type of school-leaving certificate you have. You also have an “international HZB” if, for example, you have completed

• a French Baccalauréat at the French Gymnasium in Berlin
• an International Baccalaureate at an international school in Germany
• the assessment test at a preparatory college (Studienkolleg)

The assessment of international certificates is determined by the Central Office for Foreign Education (Zentralstelle für ausländisches Bildungswesen ) of the Standing Conference of the Ministers of Education and Cultural Affairs (Kultusministerkonferenz). On the following websites you can find out whether you can study in Germany with an international school-leaving certificate:

• DAAD admissions database
• anabin database (in German)
• Uni-assist page on the "HZB"