A high school teacher is an educator who instructs students typically in grades 9 through 12. They specialize in specific subjects such as mathematics, science, English, or history, helping students develop knowledge and skills necessary for their future. High school teachers create lesson plans, assess student performance, and provide guidance to help students succeed academically. In addition to teaching, high school teachers often engage in extracurricular activities, such as coaching sports or advising clubs. They play a crucial role in shaping students' social and emotional development, preparing them for college, vocational training, or entering the workforce after graduation.