How long are high school soccer games, and is there overtime?

Under NFHS Rule 7:

• Game length: two 40-minute halves or four 20-minute quarters.
• Halftime: 10 minutes, unless the coaches agree otherwise.
• Clock stops after goals, on penalty kicks, for yellow and red cards, for injuries, and at the referee's discretion. It also stops if the leading team substitutes in the final 5 minutes of regulation or overtime.
• Overtime: allowed if your state association adopts it, up to 20 minutes maximum. There are 5 minutes between the end of the game and the first overtime period, and 2 minutes between overtime periods. Postseason tie-breaking procedures are set by each state association.
• Suspended games: a game is official once one half has been played, unless your state association says otherwise. If a game is suspended in the first half, the state association decides whether it restarts from the beginning or from the point of suspension.