Tips for kids going to college a plane ride away?

TSA Pre-check is a lot quicker to get now than it was a few yrs ago. Did it last month for one of my kids who just turned 12 - went to DMV for the state ID, came home and made a TSA appt for two days later, went to small TSA office (not at the airport) for approximately 6 minutes, and had the KTN three days after that.