A traffic school established by a city, town, or county under this chapter that collects fees for the cost of attending the traffic school may not charge a fee in excess of the penalty for an unscheduled traffic infraction established by the supreme court pursuant to RCW 46.63.110. For the purposes of this section, the penalty includes the base penalty and all assessments and other costs that are required by statute or rule to be added to the base penalty.
RCW 46.83.080