What is the main conflict in the book The Teacher's Funeral?

The main conflict in the book "The Teacher's Funeral" by Richard Peck revolves around the sudden death of the teacher, Miss Myrt Arbuckle, and the subsequent struggle of her students to adjust to a new, stricter teacher. The students must navigate the challenges of adapting to a new teaching style while also dealing with personal and family issues. The conflict is further exacerbated by the students' resistance to change and their loyalty to their beloved former teacher.