Creating a GA-type position in your HS program?

I think this can 100% be done, and as some have alluded to, get a student a high school credit and real-world experience. There would need to be some type of interview process to see who was qualified: responsible, accountable, punctual, can follow directions, etc. In my view, it is an upperclassmen's opportunity for an internship within the school they attend. Give them tasks they can handle and then slowly give them more duties when the time is right. Filming parts of practice, holding a bag during drills, spotting the ball during team period, etc. Set clear and realistic expectations for them, then add more to their plates when ready.

At my last school our students were required to complete 10 hours of community service a year, I had a couple of students that approached me about working for the football team. They ended up being our filmers, we taught them how to film during spring practice and they ended up doing a really good job for us, we ended up with 3 (endzone, wide and tight). As more kids heard about it we had more interest. We ended up with 2 stats girls, we used the stats sheet off of MaxPreps, and had them take stats on old game film to practice. We also had field managers that would help set up bags and cones and then stay with a position group with a 6-pack of water bottles so we actually ended up eliminating water breaks from our practices and saved about 30 -40 minutes on practice. The players just grabbed a drink in between reps whenever they wanted and we had a clock operator (just for practice, she did not do games. But she enjoyed sitting in the booth and doing her homework).

In exchange they would get a t-shirt, a sweatshirt or jacket, and all of their hours completed during the football season. They were also responsible for training their replacements for when they graduated.

Worked great for us.