![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.jpg)
The Opponent Strength Index (OSI) provides a preseason snapshot of the overall strength of schedule for Class 4A 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 the quality of competition. It also serves as one of several key components in the Florida Power Rankings Index (FPRI), which delivers a comprehensive measure of team strength across the state.
These Preseason OSI rankings will evolve weekly throughout the 2025 season as games are played, offering an updated look at the toughest schedules in Class 4A football.
1. American Heritage (Plantation)
District: 4A-15
Preseason OSI: 83.12
2. Miami Norland
District: 4A-15
Preseason OSI: 72.87
3. Rickards
District: 4A-2
Preseason OSI: 63.11
4. Plantation
District: 4A-15
Preseason OSI: 61.65
5. Port Charlotte
District: 4A-12
Preseason OSI: 60.07
6. Lake Wales
District: 4A-7
Preseason OSI: 59.71
7. Pine Forest
District: 4A-1
Preseason OSI: 58.65
8. Columbia
District: 4A-3
Preseason OSI: 57.75
9. Riverside
District: 4A-4
Preseason OSI: 56.26
10. Gainesville
District: 4A-5
Preseason OSI: 55.35
To see the remaining OSI rankings for Class 4A, become a Premium Season Ticket Member or Premium Monthly Season Ticket Member or login below if you already have a membership.
These Preseason OSI rankings will evolve weekly throughout the 2025 season as games are played, offering an updated look at the toughest schedules in Class 4A football.
![Robinson (Tampa), Miami Edison, Wildwood, Seminole Ridge, and Alonso lead with the best probabilities for winning a flag football state championship in 2026. [Robinson Flag Football/Instagram; Miami Edison Flag Football/Instagram; Wildwood Flag Football/Instagram; Seminole Ridge High School/Instagram; Alonso Flag Football/Instagram]](https://floridahsfootball.com/wp-content/uploads/2026/02/Preseason-2026-State-Championship-Probabilites-According-to-the-Florida-Power-Rankings-Index-Preseason-Rankings-120x86.jpg)
![Robinson (Tampa) looks to make a run towards a 10th consecutive flag football state championship and 11th overall in program history this spring. [Robinson Flag Football/Instagram]](https://floridahsfootball.com/wp-content/uploads/2026/02/Tampa-Bay-Preseason-Flag-Football-Preview-Rankings-Robinson-120x86.jpg)
![Miami Edison, which captured their first flag football state championship in 2025 will be among the top teams in South Florida to start off the 2026 season. [Miami Edison Flag Football/Instagram]](https://floridahsfootball.com/wp-content/uploads/2026/02/South-Florida-Flag-Preseason-Top-25-Analysis-2026-120x86.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)
![Buchholz will have the toughest schedule for the 2025 season among Class 6A teams. [Joshua Wilson/FloridaHSFootball.com]](https://floridahsfootball.com/wp-content/uploads/2025/08/FPRI-Class-6A-OSI-toughest-schedules-for-2025-75x75.jpg)
