Taken from the 2012 MRA Rulebook section 4.6 Novice to expert advancement process:

D. All riders who begin the season as a Novice must complete 4 hours of community
service to the club that season. Novice riders must complete 4 hours of service
before being upgraded to expert. Failure to complete the service will result in the
forfeiture of all points and standings for the season, as well as any online results
and database scoring, for all classes in which the rider has competed.
E. For the purposes of this section ‘community service’ may include but not be
confined to scorekeeping, approved event participation, or any other service as
defined and approved by the Board. Attending a general meeting will equate to
one half hour of community service up to a maximum of two hours. You also
have the option to “purchase” your service hours for a payment of $100 to the
MRA. You can either pay the amount in full, or work the full 4 hours.
F. The Board may waive the requirement of community service for a rider for
extraordinary circumstances and by a majority vote of the Board.