A high school football game consists of four quarters, each lasting 12 minutes, making the total official playing time 48 minutes

. However, the actual duration of a high school football game is typically much longer due to several factors. On average, a high school football game lasts about 2 to 2.5 hours from start to finish

. This extended duration is due to:

• Halftime break, usually lasting 10 to 20 minutes, which allows players to rest and includes performances such as marching bands or cheerleaders

• Time between plays, as the clock stops for incomplete passes, players going out of bounds, penalties, timeouts (each team typically has three per half), injuries, and other stoppages

• The play clock, which is generally 40 seconds between plays, adds to the overall time

• Possible overtime if the game is tied at the end of regulation, which can add additional time depending on state rules

In summary, while the official game clock runs for 48 minutes, the full high school football game experience typically lasts around two to two and a half hours due to breaks, stoppages, and other delays.