The Opponent Strength Index (OSI) provides a preseason snapshot of the overall strength of schedule for Class 3A programs heading into the 2025 season. The higher the OSI rating, the tougher the schedule a team is expected to face. As the season unfolds, the OSI will update weekly based on results, reflecting both performance and…










![Baker County has one of the toughest schedules in Class 3A for the 2025 season. [X/@BCWildcatsFB]](https://floridahsfootball.com/wp-content/uploads/2025/08/FPRI-Class-3A-OSI-toughest-schedules-for-2025-750x422.jpg)

![The Alonso Ravens (Tampa) have taken over as the No. 1 ranked team in the Sunshine State, according to the Florida Power Rankings Index heading into Week 6. [Tori Richman/Tampa Bay Buccaneers]](https://floridahsfootball.com/wp-content/uploads/2026/03/FPRI-Rankings-After-Week-5-Featured-120x86.jpg)

![Alonso (Tampa) has taken over the No. 1 spot in the Tampa Bay Regional rankings while remaining No. 1 overall in Class 4A. [Tori Richman/Tampa Bay Buccaneers]](https://floridahsfootball.com/wp-content/uploads/2026/03/FPRI-Week-5-Power-Rankings-120x86.jpg)


![Columbia has one of the toughest schedules among Class 4A teams for the 2025 season. [X/@CHSTigerPride_]](https://floridahsfootball.com/wp-content/uploads/2025/08/FPRI-Class-4A-toughest-schedules-for-2025-75x75.jpg)
![Manatee will have one of the toughest schedules among Class 5A teams in 2025. [Joshua Wilson/FloridaHSFootball.com]](https://floridahsfootball.com/wp-content/uploads/2025/08/FPRI-Class-5A-OSI-toughest-schedules-for-2025-75x75.jpg)