The Hechinger Report has a piece on the parent trigger that seems particularly slanted in its favor. That’s a bit surprising to me, since their work is usually pretty objective.
However, it does include a very good comment from Barnett Berry from the Center For Teacher Quality:
Barnett Berry, founder and CEO of the nonprofit Center for Teacher Quality, also finds the group [Parent Revolution] suspect. He says the movement would fall flat were it not for the funding. “As long as wealthy individuals continue to market parent trigger, as long as there’s money behind these matters, the group will stay in the news and give us a sense that the movement still has momentum,” he says.
You might also be interested in The Best Resources For Learning Why The Parent Trigger Isn’t Good For Parents, Kids Or Schools.