1. For the purposes of this section, "attendance" shall be defined as actual, physical attendance at the board meeting until all of the business of the board has been completed unless a member is excused by a majority of the board. This subsection shall not apply to seven-director districts.
2. Any member of the school board of a seven-director district, including urban districts, failing to attend the meetings of the board for three consecutive regular meetings, unless excused by the board for reasons satisfactory to the board, shall be deemed to have vacated the seat; and the secretary of the board shall certify that fact to the board. The vacancy shall be filled as other vacancies occurring in the board.