While my opinion doesn't mean much, I can talk from personal experience about the best things a high school athlete needs. One of the most important things is explosive movement from a variety of positions, like cleans, deadlifts, plyos, and sprinting. The speed of these movements is what sets athletes apart on the field. Someone who can typically clean and deadlift with speed tends to have good in-game movement. Learning how to run is a skill these days, and it's pretty scary if you think about the bigger picture—kids just don't know how to move their bodies efficiently anymore. Teaching a athlete how to efficiently run and get rid of wasted movement is a lost art among coaches.
The next hack that I always talk about is kids need to eat! And not just whats offered to them at school, athletes need almost double of what is offered, I always tell our guys to find a friend who doesn't eat their lunch and ask them to grab their plate so they can have a double portion. Its silly that it needs to be like this, but our kids just weren't eating enough. Boosters/Parents/Supporters also providing snacks for athletes can help with those energy stores before a practice/weights. A fridge/shelf full of snacks can allow a kid to quickly grab something to eat and have SOMETHING on their stomach for practice.
The next hack that I'm currently struggling with here in West Virginia is sleep, our kids have to be in class at 7:37am, busses arrive at 7:05. So our kids are getting up at 5-5:30 in the morning to catch the bus and get to school. So if a student goes to bed at 10 they are getting at best 7 hours of sleep, where teenagers need 8-10 a night to see proper recovery and growth.
@New Colonel Mentions that athletes need to be spent leaving the weight room, I agree and disagree at the same time. I think Offseason wise a good grind session is good for guys due to them needing to be challenged. But in the same breath I will say it needs to be something left in the tank so that recovery and growth isn't hindered. It is a delicate balance that we have to monitor, because if someone isn't recovering they aren't growing. The crucial point being is that our nervous systems are so in tuned to our performance wrecking that on Monday will most likely cause a loss of growth on Wednesday. Again no right or wrong here, just my own perspective.
There is a ton of information you have all gathered and in my opinion that can create a great improvement to our sport, I do believe that in the last 20 years or so, the development of Kentucky Athletes has come leaps and bounds! That all comes from better coaching and a willingness to step outside our comfort zones.