![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.jpg)
The Opponent Strength Index (OSI) provides a preseason snapshot of the overall strength of schedule for Class 5A 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.
1. Heritage (Palm Bay)
District: 5A-13
Preseason OSI: 63.79
2. Leon
District: 5A-2
Preseason OSI: 63.06
3. St. Thomas Aquinas
District: 5A-15
Preseason OSI: 61.02
4. Lakeland
District: 5A-6
Preseason OSI: 60.85
5. Lincoln
District: 5A-2
Preseason OSI: 60.03
6. Manatee
District: 5A-9
Preseason OSI: 59.25
7. Kathleen
District: 5A-6
Preseason OSI: 58.32
8. Atlantic (Delray Beach)
District: 5A-14
Preseason OSI: 55.69
9. Blanche Ely
District: 5A-14
Preseason OSI: 54.62
10. Tampa Bay Tech
District: 5A-8
Preseason OSI: 52.54
To see the remaining OSI rankings for Class 5A, 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 5A football.
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![St. Augustine is a heavy favorite in their Week 10 game. [X/@SAHSJackets]](https://floridahsfootball.com/wp-content/uploads/2025/10/FPRI-Projected-Scores-Week-10-Featured-120x86.jpg)
![Carey Metts (left) and George Wade (right) are currently leading Orangewood Christian and Eustis respectively. However, they are not expected to be the leaders in charge come the 2026 season [Courtesy of Orangewood Christian & X/@GWadeFF]](https://floridahsfootball.com/wp-content/uploads/2025/10/Orangewood-Christiand-and-Eustis-coaching-openings-Featured-120x86.jpg)
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![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)
![Both Lake Mary and Venice are among the Class 7A teams with the toughest schedules for 2025. [Joshua Wilson/FloridaHSFootball.com]](https://floridahsfootball.com/wp-content/uploads/2025/08/FPRI-Class-7A-OSI-toughest-schedules-for-2025-75x75.jpg)
