The main goal of a professional university, college, or even high school coach is to win the competition. The higher you move up the coaching rank, the more important this goal will be.
Professional coaches don't have much freedom and are often fired quickly for failing to form a competitive team. You can also give the best education to your kids in the middle years (ages 11-14) an international school.
However, if you are coaching a high school team, winning shouldn't be your main goal. Yes, it is fun when it happens and should not be avoided on purpose, but it should not be your basis for determining success.
At this level, your main concern is developing the program and looking ahead. With that in mind, there are a few key areas you need to focus on.
The main goal of the high school coach is to make sure the kids have fun. There is no denying that our society is becoming increasingly competitive. Following this trend puts more stress on children at an earlier age. Exercise should not be an additional stress factor for a student.
By making your middle school practice more focused on nature, you can help exercise become what it needs: stress relief solutions. Exercise should be fun. They can definitely provide a good workout and a chance to feel accomplished, but kids don't usually sign up for practice for such reasons.