I realize that Wikipedia is not a rules authority, but not being a football official it's the only reference I have. I bring this up because there have been several posts regarding the clock...
Snipped from
Fair catch kick - Wikipedia, the free encyclopedia
The fair catch kick has unique rules which distinguish it from other free kicks, such as kickoffs. Most significantly, it is the only variant in which the kicking team can score a field goal. Also, onside kicks are not permitted; the ball cannot be recovered by the kicking team unless first touched by the receiving team.
In high school football, if the kicking team can recover or catch the ball beyond the receiving team's free-kick line before the ball becomes dead, they take possession of the ball.
The clock starts when the ball is kicked. If the kick is unsuccessful, the rules are similar to that of a normal missed field goal: the opposing team has the option of fielding the ball and attempting a runback, or of taking possession at the spot of the kick.[1] A successful fair catch kick is followed by a normal kick off.