1. New schools are built diluting the student population. simply put, other schools records are probably similar or faster.
2. Running is not as big of a deal any more. In general students are over-weight, unmotivated and running is hard. And who wants to sweat when you can go home, play video games and feel like you have friends by posting on facebook.
3. 9:20 is a solid time. It may not get you tot he state meet any more but it is still hard to do.
4. Sports have changed. The focus is now on specialization and club sports. That soccer player is now playing all year, and paying money to do so. They are told not to do any other sport or they will get behind and lose out on that scholarship, or Olympic team or whatever the coach is promising them. (I have heard that directly from the coach by the way).
5. Populations are growing. We no longer have a sense of community, even amongst many of our smaller towns now days. Basically, less people care.
6. Motivated, disciplined students with a strong support system are going to private schools. Public schools have a bad image, mostly unjustified, but still. Those who can afford it want their kid in the best school. If that's not the local private school they move or go private.
7. Coaching. Is there such thing as a long term coach any more? Teachers are over worked for the pay and less and less are coaching. Coaches get paid even less. You really need to love it. If you look at all the good programs there is on constant, coaching.
8. Many more reasons... just think about it.