As a high school computer science teacher, your duties are to develop and teach courses on computer science to students in grades nine through twelve. Your specific responsibilities include leading classroom discussions about the subject, conducting lab components, and assigning homework and special projects that require students to program, process data, store information, and develop new applications. Computer science is often an elective course in high school, and you may have more opportunity to develop your own curriculum rather than teaching to a specific state-mandated program. You may also have a specific field to teach, such as web design or software engineering.