Entry Level Position in IT Service?

Hello, I’m currently a Junior in High School and am looking to go into a field in the IT Service Management industry. I’ve seen what pay is available for manager positions but am confused on what position is available to start out with. Should I find a company that offers a management position and apply for an IT Service Technician to work my way up? All of this is after a theoretical asscociates/bachelor degree in Internet Technology/Computer Science.