Section 38O. In any city, town or regional school district which accepts this section, the school committee shall meet at least once every other month with an advisory committee which shall advise said school committee concerning reading, visual aid and all other material pertaining to sex education. Said committee shall consist of eleven members, one of whom shall be a physician and seven of whom shall be parents of children attending a school of such city, town or regional school district. The school committee in June of each year shall appoint said committee.