SB 939 proposes amendments to the Texas Education Code regarding the composition of a school district’s local school health advisory council. It mandates that the board of trustees appoint at least five members to the council, ensuring that a majority are parents of students enrolled in the district who are not employed by the district. Additionally, it requires that at least one member of the council be a district high school student who has applied for the position. The bill outlines the notification process for students, requiring the district to inform high school students of the opportunity to serve through postings in common areas like cafeterias. The board is also required to continuously accept applications for the student position until it is filled.