Test-Driven Development (TDD) is a widely adopted practice, but it is not a one-size-fits-all approach. Over time, several schools of thought gave emerged, each offering distinct philosophies and techniques. This talk explores the different TDD schools, including their unique focuses and methods, from the class approach (Detroit/Chicago School) to more modern interpretations like the London or Munich School. Attendees will gain an understanding of how these schools differ in their objectives, and why it's importatnt to choose the right approach for specific challenges. Ultimately, the talk emphasizes the value of flexibility over dogmatism, encouraging to adapt principles and practices as needed to improve code quality and maintainability.