Kindergartens and schools are not obliged to offer mother tongue instruction.
In Brandenburg, no mother tongue education is offered in child care facilities. There are bilingual kindergartens that support English, Spanish, French, Polish, Russian and Turkish. A list of kindergartens with bilingual language offers can be found here: http://www.fmks-online.de/bilikitas.html?case=&sort=&dir=ASC&suche=Brandenburg&sub1=true
In the schools in Brandenburg there is an offer for voluntary additional instruction in the language of origin for all pupils with a migration background. Classes are grant-aided from a group size of at least 12 pupils of the same mother tongue. It takes place for a maximum of 4 lessons (à 45 minutes) per week after the regular lesson.
At present, additional mother tongue teaching is offered in the following languages: Arabic, Persian, Polish, Russian, Spanish, Turkish and Vietnamese. Information and locations with the respective language can be found at: http://www.raa-brandenburg.de/Projekte-Programme/Muttersprachlicher-Unterricht