I teach people when and how to manage technology in a business environment.
I write a lot, and I do a lot of verbal presentations (both in-person seminars and online). I interact with my students. They help me understand what challenges their business or organization faces, and I help them understand what technologies might be helpful. I then help them learn how to apply and manage those technologies.
Here's the first step for high school students
Forget college - what they teach for IT is rarely applicable to the real world. Instead, get an entry-level job, take IT training classes, and learn from experience. Take on additional responsibilities at work to learn about new things on the job. IT would be better served by internships and apprenticeships than by traditional classroom learning. Very few of the top people in IT received formal training in the subject. If it's your hobby as well as your job, you'll go far - and be happier.
"You can't get into computers, because you aren't very good at math."