GFG complained that she couldn’t trust the teachers to make an accurate assessment. I call that a question of competence, not conflict of interest necessarily. Assessment (both formal and informal) is a primary needed qualification of any teacher for credentialing; if the teachers cannot assess (or will not) accurately, they should be fired, union or no. And assessment, along with more comprehensive evaluation of a student, is what one looks for to provide a well-reasoned, credible recommendation for college. Again, why would any parent TOLERATE a school where the competent teachers were so few, given that so much (for private colleges) rests with penetrating teacher recs?