A meeting for a first offense? Who was the other kid, the PTA President's kid?
Hey, he kicked her in retaliation. Chances are, she won't do that again.
Probably as other have stated...she's stressed or anxious about home stuff. Make sure you point this out at the meeting. Also, there should be counseling offered. She just needs to find an outlet, other than her current mode.
Swimming? Soccer? Something where she's in a group and moving.
ADD? Who gets checked for that in K? Most people with ADD attribute it to their success. DO NOT let ADD become an excuse...in most cases, it's an asset. I speak as a poster child from the 70's and I have the "H" as well in there.
24 year teacher (elementary)
3 businesses
Masters Deg. in Ed.
blah, blah, blah...
She may be looking for attention and sometimes young kids act out to get it. Keep her busy and do not sit at her level and "talk" to her each time...she's drawing you into attention via this behavior. I see parents doing this and I'm like, "Tell your kid to stop being a jerk." This, "Ohhh, baby...why do you feel you did this?" is lame. You just gave the kid an out because once they say a reason, it's like it's not their fault.
Rules I try:
I don't raise my voice (it's hard)
I repeat and do not engage (I'm the adult. We are not peers. This is not a discussion or negotiation)
Positive reinforcement WHEN appropriate (I don't say, "Good job," to build self-esteem. Kids are smart and know BS when they hear it).
I'm still surprised they want a meeting, unless it's a 2nd or 3rd time showing anger. Perhaps she is having social issues where it's hard for her to be a part of the group. Again, school counselors are a great way to talk it out and get a little break during the day.
I WOULD NOT recommend meds! I've seen kids taking meds to make them "focus and stay with the class" during school. Whatever happened to the out of the box thinkers and those that innovate, create, etc? Grades mean nothing if the kid is made to feel they have a disability. It's ridiculous. Look at what Stanford put out...highest GPA kids ever attending and the worst executive function. Kids can't take care of themselves.
Go back to biking to a buddy's house, build jumps, play in trees, be outside and explore. Eat real food! All will be fine. I have 2 teens, this early age is EASY.
Best of luck!