Is the language of instruction in Germany English for a Master's/Bachelor's?

It depends. Most German universities teach in German, especially at the undergraduate level, and German language proficiency is usually required.

- English-taught programs are more common for master's degrees, with 1,500+ options available. These require proof of English proficiency (like IELTS or TOEFL).
- Undergraduate programs are mainly in German, so strong German skills are typically needed.

If you plan to study in Germany, especially for a bachelor's degree, learning German will be important. For master's programs, you have more options in English.