Nature Coast had prepared a response for Wednesday's scheduled appeal to fines and penalties levied in November by the Florida High School Athletic Association.
The school was fined $10,400 and the football team disqualified from the playoffs, stripped of its spring game and placed on probation for its role in a Nov. 7 brawl at Groveland South Lake.
But Nature Coast officials opted not to appear Wednesday morning before the Sectional Appeal Committee at the Marion County School Board.
Nature Coast officials had no comment, and athletic director Travis Lamle referred all questions to Hernando County superintendent Wayne Alexander. A message left with his secretary was not immediately returned.
Nature Coast's absence effectively ends the school's options for an appeal, FHSAA spokeswoman Cristina Alvarez said in an e-mail. She said new FHSAA executive director Roger Dearing, who started Tuesday, would consider lowering the fine if Nature Coast participates in a sportsmanship seminar.