I didn't join the Mead program until 1994 (Micah and Skiy were still around) but I don't think the program changed much between 1993 and my stint (aside from graduating the bulk of the talent).
During the school year, I would say the base program was around 50-75mpw with doubles every weekday (20 minute light morning run before school) and a long run (hour to hour:30) on Sundays. The way I understood it, Tyson was getting a lot of workout hand-me-downs from Dellinger and tailoring them to HS kids -- basically giving versions of the workouts that HS kids could successfully complete. That's always been one of Tyson's strengths -- fitting a workout to a kid so he feels deserved success upon completion.
I still have all the workout sheets that were posted in the locker room each week (Tyson would bind them with results and newspaper articles at the end of the season for a cool keepsake). Here's an example week from the very start of the season (Aug 28-Sep 3 1995, school not yet in session so no morning run):
Monday: 50 minute fartlek (Indian file run or whatever)
Tuesday: 40-50 minute regular run
Wednesday: 6x800m loops on grass in a park + 12x100m grass strides
Thursday: 40-50 minute regular run
Friday: 30 minutes of Oregon Drill
Saturday: Tempo 30 minutes with a buddy
Sunday: 1 hour easy.
And a week from mid season (Oct 9-15)
Monday: AM light 20 minutes, PM 3M fartlek with 10 minute warmup and 10 minute cooldown.
Tuesday: AM light 20 minutes, PM 30 minute run +12x100m grass strides
Wednesday: AM light 20 minutes, PM 3m race dual meet
Thursday: AM light 20 minutes, PM 40-50 minute run
Friday: AM light 20 minutes, PM easy 30 minutes
Saturday: Race simulation. 10-15 min warmup, then 1600-800-800-1600 hard over home course. 10-15 min cooldown + 12x100m grass strides.
Sunday: Easy one hour.
Also, nearly every day features about 3-5 minutes of guts and 50 pushups.
These workouts were from 1995 -- the entire 1993 team had graduated, but we still had decent talent (ended up something like #13 in USA according to the venerated Harrier rankings). Hope that helps. Maybe Matt or Rob will chime in with how things were different a couple years earlier.
Hope this helps, sorry for being long winded. This is one of the few running related topics where I actually have something of potential value to contribute. about ...