Muriel does not work in a school environment, but she works at the school district office making decisions and setting policies. Muriel is most likely a (n)

Muriel is most likely a member of the district school board, since she works establishing policies and regulations that govern the schools in her district. She is an elected official, a state officer, with a significant range of decision-making authority, and that's why she, together with the other members of the board, can make rules and policies, set learning standards and educational goals, budgets and agendas, provide leadership for the district schools, and other actions.

Member of the district school board.

Explanation:

The district school board members are like county officers for education, serving the public school system. The responsibilities of this job are:

Setting direction. Establishing an effective and efficient structure. Provide support. Provide community leadership advocated for school system.

So, at the end, the board has to make decisions for the best serve to all students.