Last week, St. Francis pulled off a major upset over Loyola Academy, while Maine South and Oswego both fell in upsets of their own. This week, St. Rita and St. Francis face off in a meeting of top-10 squads, while No. 3 Chicago Mount Carmel, No. 4 Batavia and No. 7 Marist are play ranked opponents. Below are the Illinois high school football games of the week. The On3 Massey Ratings — which were officially used during the BCS era and have generated college high school sports team rankings since 1995 — rank sports teams by analyzing game outcomes, strength of schedule and margin of victory. CLI…