"I am deeply grateful for my German teacher, Philipp. Having attended both his group and individual classes, I can confidently say both are exceptional. Philipp doesn’t just teach—he brings the German language to life with clear explanations and engaging, making learning effective and enjoyable. In group classes, he ensures every student’s needs are met in a warm, inclusive environment, while in individual sessions, he tailors lessons to address unique challenges and goals.

What sets Philipp apart is his professionalism, deep knowledge of the German language and culture, and his ability to create immersive, interactive experiences. His classes are more than lessons—they are moments you look forward to, where learning feels natural and fun. For anyone wanting to learn German, I cannot recommend Philipp highly enough."

I’ve been taking my A2 German classes at Horizon Language School with Roel as my teacher, and I have to say, it’s been a great experience so far. The quality of the materials and the way Roel explains grammar make a huge difference. He doesn’t just go through the book and exercises like a checklist. Instead, he takes the time to explain important concepts using his own tables and extra materials, which make everything much clearer and easier to understand.

Roel has a great way of making learning German feel approachable, and I’m excited to continue and reach higher levels with him. I’m very satisfied with the progress I’ve made so far, and I highly recommend Horizon and Roel to anyone looking to learn German!

"Working and studying at the same time is a struggle, especially when learning a foreign language. Despite my challenges with time management, Roel ensured I could learn at my own pace in an interactive way. He made sure every student fully understood the lesson before moving on to the next. Most importantly, he teaches with heart, which made the learning process truly inspiring."

"At higher language levels, progress is typically slower compared to when you first start. That's why I was so impressed by how much my German improved during my 4-week C2.1 intensive course with Roel. The lessons had clear expectations, a well-structured format, and varied tasks, but the real highlight was the engaging conversations with interesting people! Roel explains the finer points of using German in different contexts, helping me bring my language skills closer to a native level. If you're looking for a great teacher, Roel is the one to choose."

"Philipp is one of the best teachers and kindest people I’ve ever met. He’s passionate about teaching and truly wants his students to reach their full potential, even if that means being strict sometimes. He didn’t just teach me German but also shared valuable insights about German culture, which I know will be useful in the future. He believed in me from the beginning, supported me through my B2 exam, and was overjoyed when I passed on my first try. I’m forever grateful to him for his help."

"The C2.1 course content and approach are perfect for exam preparation. Roel's teaching goes beyond exam techniques; he delves into the etymology of words and expressions, which enhances understanding and fosters self-learning. This approach helped me develop strategies to continue learning independently. I also want to highlight that Roel is a patient and supportive teacher—truly a great person."

"I've been learning German with Philipp for the past year, and he is an outstanding teacher. Having attended several language schools and experienced many instructors, I can easily distinguish quality from average performance. Philipp is a top-class teacher—patient, attentive, and skilled at identifying each student's weak points. I highly recommend him!"

"Thank you, Roel, for pushing me to do my best and helping me understand what I need to focus on for my German exam. I’m very grateful to have been in your class and have learned so much from you. Your passion for teaching is truly inspiring, and I’m proud to have been your student. You teach with conviction, and your enthusiasm has motivated the entire class, giving us all a great deal of inspiration."

"I’ve gained so much confidence in just one month, especially with speaking. It’s still challenging, but I can see real progress—more than I’ve experienced at any previous level. The teacher’s expertise and practical, hands-on approach made a huge difference, helping me improve faster than I ever expected."

"The classes are comprehensive and the teachers take the time to focus on everyone’s pace. I had a great experience and it feels like my German was improving much more through the course, plus the dynamic of the class allowed me to better perform at conversations in the language. Definitely recommended! "