Understand complex ideas, speak fluently, and express yourself with precision in academic, professional, and real-life situations.




You will learn to speak in long, detailed, and structured conversations — almost like a native. You’ll express opinions, arguments, and reasoning with clarity and confidence.
You will gain advanced phrases used in universities, workplaces, presentations, debates, and business environments.
You will understand and use advanced grammar such as passive voice, relative clauses, adjective endings, complex connectors (obwohl, während, sodass, nachdem), and Konjunktiv II.
You’ll understand long discussions, podcasts, news channels, documentaries, and fast native speech, even when vocabulary is unfamiliar.
You’ll read and understand academic texts, articles with complex language, opinions, critiques, arguments, and professional documents.
You’ll handle situations like interviews, presentations, negotiations, complaints at a professional level, and discussions requiring diplomatic or polite language choices.

This workbook is essential for your homework and practicing the grammar concepts learned in class.
Publisher: Klett
ISBN: 978-3-12-605036-4

This is the main textbook we use in every lesson for reading, speaking, and new topics.
Publisher: Klett
ISBN: 978-3-12-605295-5
C1 is an advanced level, but the course is structured in a step-by-step way that makes the learning process smooth and manageable. You will progress steadily with guided support, speaking practice, and clear explanations.
You will sound very fluent and natural in most situations. C2 is native-level mastery, but C1 is more than enough for universities, professional communication, and confident real-life interaction.
A strong B2 foundation is important because C1 builds directly on advanced grammar, vocabulary, and communication skills. If you are unsure, you can take a short assessment with Heiko.
To accommodate international professionals and university applicants, this course is 100% digital. You will interact directly with Heiko in real-time online, ensuring you can participate from anywhere without physical attendance.
No, C1 is an advanced academic and business level. Our coaching is strictly for adults aiming for university entrance or high-level employment. We do not provide general tutoring (Nachhilfe) for younger students.

Empowering learners worldwide with accessible, quality education.
Contact: +49 1525 2613545
Address: Stahnsdorfer Str. 95, 14482 Potsdam