What is the requirement regarding the educational background of board members?

The requirement that no two members shall be graduates of the same school ensures a diverse range of perspectives and experiences among board members. This diversity is crucial in discussions and decision-making processes, as it can lead to a more comprehensive understanding of various educational philosophies and practices. By having members from different alumni backgrounds, the board can bring together a variety of viewpoints, which can enhance the quality of their governance and oversight of educational standards.

The other options suggest prerequisites related to advanced degrees, years of licensure, or teaching experience. While these qualifications could contribute positively to a board's functionality, they do not specifically highlight the importance of diversity in educational background, which is the essence of the requirement highlighted in the chosen answer.