In a public school, a teacher notices that a student is being
favored by another educator, who frequently gives him grades
higher than he deserves and treats him preferentially in activities
and assessments. At the same time, the teacher knows that a
formal complaint could harm relationships within the teaching
staff and even create a hostile environment for both him and the
student. Considering the ethical principles of the profession,
what is the most appropriate attitude the teacher should adopt?