Three members of the board in the Wrenshall School District in northeastern Minnesota have apologized for a contentious meeting last month.  Following the meeting, during which a proposed mask mandate was debated, 16 students withdrew from the district.  During the meeting, the board’s vice chair questioned the science behind masks and said requiring students to wear them would be child abuse.  She later apologized for her remarks.  The board will discuss at its next meeting a proposal that would require masks in the Wrenshall school district if five percent of students and staff test positive for COVID-19.