To thrive as a High School Computer Science teacher, you need a strong understanding of programming languages, computer science fundamentals, and a valid teaching credential in secondary education. Familiarity with classroom management software, learning management systems (LMS), and tools like Python, Java, or Scratch is typically required. Excellent communication, patience, and the ability to inspire students to explore technology are crucial soft skills. These qualities are essential for effectively teaching complex concepts, managing a dynamic classroom, and fostering student engagement in STEM fields.