KONTEXT is a comprehensive textbook designed to guide advanced adult learners from B1+ through C1 in three volumes (or six half volumes), corresponding to ACTFL levels from Intermediate High to Advanced High. It focuses on the four main language skills, language mediation, and prepares students for various official proficiency exams, including Goethe-/ÖSD-Zertifikat B1, Goethe-Zertifikat B2 and C1, telc Deutsch B1 through C1, ÖSD-Zertifikat B2 and C1, DSH, and Test-DaF. The program aligns with the CEFR and incorporates modern educational strategies to ensure effective learning outcomes.