Is the common app teacher evaluation still a thing that is required? If so, by which schools and by how many teachers/counselors? (I’m talking about the one where they rate you on personal qualities)
Yes it still exists and is required by some schools. You need to create a Common App account and look at each individual school’s requirements. Or look at each school’s undergrad admissions website to see the requirements. Some schools require none (won’t even look at it) and some require one or more - with the discipline sometimes specified depending on the major. For engineering at some schools, DD needed two STEM teachers.