Overview
Mexican citizens do not need a visa for tourist trips to Germany that are less than 90 days.
Mexican citizens require a national visa for stays in Germany longer than 90 days. Said visa must be requested through the BLS International offices in Mexico City or Monterrey before entering the country.
Those who go to a secondary/preparatory level and who have an agreement between an academic institution in Mexico and one in Germany are considered candidates for school exchange. Being a minor, you must have a host family or an invitation from an institution to stay there.