CV workouts are a good way for HS athletes to develop endurance.
I’ve used it on more experienced athletes. While it we had success and got them fitter, some more specific work on both ends of the spectrum of speed and endurance would have probably been beneficial. For example, For whatever reason it seemed to work best for 3k, but didn’t translate as well to 5k or 1500 as much. So I would encourage you to make sure you have some workouts devoted to turnover work at your goal race. That could look like 10-20 x 200 at 3k/mile pace or a mix of 400-1000 reps at 5k pace. I like tinman’s stuff, but I think training would be better with a little more variety. Instead of having to hit CV pace every week or every other week, you could get similar benefits while working other paces.
Also, for fun and because it develops racing ability, throw in some change of pace work. There’s a world of improved performance with that stuff. It’s not a very popular topic, maybe because it’s more unknown and practiced by coaches and there’s not much research on it.
Keep up the good work. Have fun with it.