I hope that some more coaches will chime in here. But, as a clueless HS parent, I hope you are explaining to your players WHY improving these metrics will help them play better baseball. If a kid steals lots of bases, he might not understand why his 60 time is so important (for example, to outfielders); if he gets on base a lot by hitting grounders and beating the throw, he won't understand why hitting the ball harder would be better. It took a lot of reading on this board for me to understand a lot of those things that are obvious to baseball people.