Over the past 14 months I have been working with a private coach and have made huge fitness gains throughout the covid period and the off seasons, I would like to proceed working with my private coach instead of my high school coach, my high school coach has a notebook of training of what his son did back in 1990 and just copies those workouts and expects the same results, what he doesn't understand is that his son was a 800/1500 guy and I am a 1500/5k guy. I didn't even know what threshold runs were until training and I think that's given me the biggest benefit by far.
Times with high school coach vs Private coach
HS-2:08,800-->1:58
HS-4:16,1500-->4:02
HS-9:07,3000m-->8:43