As an admin myself, I would love an option to have sort by last name as a default. Right now you can choose to sort by last name but sometimes when I'm going through a classroom to get information from a child's form or something like that, as soon as you navigate away from the page and go back to the children's tab it's back to sort by first name. Then I have to select sort by last again. This sometimes makes it hard to keep track of where I'm at. There are so many things I do through TC that a default feature for last name that wouldn't affect anyone else's settings would be perfect.