This isn't really about Laura. I wish it were that simple, b/c I have great respect for her. BUT, she IS married to Malcolm and thus is part of the Gauld clan. Do we know that Laura would want to do things differently if she could?
That family system will not allow her the leeway to make changes so dramatic as to reform the underlying flaws of Hyde School and stop the damage it is doing to students and their families. It is a cult of personality focused on Joe, and now Malcolm. Consider the Washington situation and Joe's interaction with that faculty in light of his temper flare that is described under a different thread. Joanne is another fine individual. But, she cannot have the autonomy necessary to break away from a flawed situation of the group. Who knows, anyway, whether she would really want to? The Gaulds have been a kind of surrogate family for her, I would guess.
One of the craziest things, as another person has written somewhere on this site, is if you just read Joe's book, you think Hyde is a great idea. Just like Laura is a great person. But one cannot separate the ideas and principles from the personalities in this case, and unfortunately the personalities of the Gauld males, in particular, frighten me.