Notwithstanding any law to the contrary, including, but not limited to Section 1562.3, vendors approved by the department who exclusively provide either initial or continuing education courses for certification of administrators of an adult residential facility as defined by the department, a group home facility as defined by the department, a short-term residential therapeutic program as defined by the department, or a residential care facility for the elderly as defined in subdivision (k) of Section 1569.2, shall be regulated solely by the department pursuant to this chapter. No other state or local governmental entity shall be responsible for regulating the activity of those vendors.