I graduated from McHenry High School in Illinois, which used to be a perrenial Football playoff lock. Beginning during my time at the school, we started to slip, and last year the team missed the playoffs all together. I won't at this time speculate on the coaching, but the Warriors are dangerously close to missing the playoff again. In Illinois, 5-4 teams are almost a lock to make the playoffs if they come from the Fox Valley Conference. McHenry needs to beat Crystal Lake South who is currently 7-1 and ranked #6 in 6A play. Crystal Lake South's only loss came from #3 Cary Grove. Things do not look good for the Warriors, but after a strong showing against Cary Grove earlier this year, anything is possible.
Edit: Here is the Massey Ratings for McHenry this year.
For the most part they have beaten the teams they should, and lost some by a much closer score than many predicted. (The rankings on the linked page are across all classes of State Football)