My DD's school day starts at 9 and most days she is up by 7-7:30 with her dad. She has her bath the night before, and I might pack the non-perishables the night before and find her shoes. Usually I get her input to help ensure she eats lunch, so we discuss that over breakfast. Breakfast is something light and quick, like waffles or a banana and juice or water. She's like me in that she can't eat a lot first thing but I want something in her to start. Sometimes DH will have her eating before I get up.
I will check the weather and suggest her clothing options. She chooses what she wants to wear and tells me what she'd like done with her hair (or not - but it still needs to be brushed). If she gets ready on time, she can watch cartoons (Nick Jr or Disney Jr or PBS Kids) while I shower, but if she's not ready, no tv. I double check that she has her shoes, coat, lunch, anything signed that needs signing, then it's tooth brushing and potty time, get shoes on and drive to school. Somewhere in there I feed the cats. Homework should have been finished the night before and already be in her bag.
Sometimes I admit we rush and sometimes we don't and part of it is just me keeping an eye on the clock. If we're running late, I will take my shower after she goes to school or not at all, to help facilitate her exit without as much stress. But that only helps if she doesn't dawdle.
With the older kids, it started out much the same at the same age, but by HS it gradually worked that the only thing we (DH) did was make sure they were up on time and they managed all the rest. Usually SD would shower the night before to get a few more minutes sleep, but SS is like his dad and needs the shower to wake up. By middle school we stopped packing lunches for them and they could put the lunch in the fridge overnight if they thought ahead. We keep lunch items on a shelf in our kitchen, so it is *mostly* grab and go, except for berries, or a sandwich.
DH used to be a single dad so he would do all the packing and prep and make sure they had clean uniforms (at the time they were in a private school) and everyone was up by 6:30 and in the car for before-care by 7:30.
Whenever possible we started getting them to bed by their "bed time" a week prior to school starting, though DD has the same general bedtime all year round.