In case of problems at school, you should always first contact the class teacher of your child. Together, you can advise on what to do. The class parent speakers are also contact persons, if you need support. If you cannot solve the problem with the class teacher, you can contact the headmaster. If you cannot find a solution here, you can contact the responsible school inspectorate i the school board in your region.
School inspectorate Bremen: https://www.bildung.bremen.de/schulaufsicht-5309
School inspectorate Bremerhaven: https://www.bremerhaven.de/de/verwaltung-politik/buergerservice/adressen-oeffnungszeiten/schulamt.22497.html
Advice and support can also be found at the parents’ associations
Zentralelternbeirat Bremen: https://www.zeb-bremen.de/der-zeb.html
Zentralelternbeirat Bremerhaven: http://zeb-bremerhaven.de/