S.H.
ALWAYS, get ready ahead of time... and do whatever you can, the night before.
Even if that means, loading up the car with whatever you need, for the next morning.
AND making the kids lunches, the night before too and filling up their water bottles. ALL the night before.
ALWAYS factor in more time, than you actually need. So that, you or the kids are not late, in going to school.
FACTOR in TRAFFIC... and how long it will take you to get to school.
HAVE a plan of alternate routes... to get to school, in case there is traffic or what not.
ALWAYS, be ready to leave the house and be ready, before you actually have to leave. Then you do not have to rush.
Get the kids up in the morning, in adequate time, not at the last minute, so they/you do not have to rush.
KNOW how long it takes your kids to get ready.
YOU... wake up earlier if you have to, so that you can get ready ahead of them, ahead of time.... and not be late.
Be ready for any glitches.
Thus, do things ahead of time and wake up earlier than you think you have to, so time is not wasted and you are all, late.
Start, getting your kids to bed, early. So they get enough sleep.
Over-tired fussy kids, will delay things.