The grammar school with a focus on business and law is suitable for children and young people and - depending on the school - for adults who want to acquire a broad general education, gain a university entrance qualification and develop professionally in the direction of business (business administration or economics) and law, i.e. who are aiming to study at a university faculty of economics or law.
You definitely need it to attend a grammar school:
Linda, deine Weiterbildungsfinderin