Warning: Long response...sorry...couldn't seem to shorten it.
A., my daughter was having a lot of problems as she adjusted to K as well. We tried almost everything...she went to counseling (haven't been completely impressed with the results...seems we are just paying a therapist to play), involved her in church programs with other children with same struggles, tried daily rewards/consequences, etc.
About three weeks ago, she had a horrible situation with an acting teacher (the teacher said to HER that she was one of the most obnoxious kids she had ever dealt with, and didn't understand how any of her teachers ever put up with her), then a few days later her Sunday School teacher reported that my daughter wouldn't respond to their instructions to stop running around the room. I just had a complete meltdown right there...literally started crying at church that of all places, I wanted to be able to bring her there. They were very loving and had some good ideas.
But, after calming down and really considering putting her on ADHD medicine (which I only wanted to look at as a last resort), I talked to a friend who has an autistic son about nutritional adjustments. She was saying something about Red dyes and corn syrup. So I thought, well, let's try that...so we went to Target and got ALL organic stuff for her. Organic juice boxes (loves), organic granola bars (loves), organic chocolate (hates), organic cookies (hates), organic cheetos (loves), eggs, cheese, organic peanut butter, bread, and jelly (loves), and organic milk and yogurt (loves). It really wasn't that much more expensive.
Well, I met with her teacher after about a week and a half of the new foods (let her teacher know we were doing it). And she said that she had seen parents try it before, but was a little apprehensive about whether it worked or not. She said that she could completely see a difference in the days that my child ate organic and didn't. It wasn't so much that she was perfect on the days she ate organic, but moreso on the days she didn't, she was much more distractable, easily disruptive, and attention-needy (not her words, mine).
Boy have I been glad that this is working...in fact, it has totally changed my viewpoint about it all. We do allow her to eat some processed foods and even very small amounts of "cheating" at home some times, but since she is home her behavior is a little easier to manage and doesn't affect others. She still gets excitable, but knowing that the food allergy is what causes it seems to make it much easier to manage (or not depending on the behavior). All along I thought it could be sugar, but it seems to be mostly corn syrup and red dye...sugar and even caffeine don't seem to be hyping her up.
On another note, I do understand that telling your child they need counseling is really against the law, but my greatest understanding about this is that it is against the law because teachers (I am a high school teacher) are not trained or educated to make medical diagnoses (sp?). I have to tall you though as a teacher, I am consistently amazed every year with the success I see from students whose "differences" are treated whether nutritionally, medically, or theraputically. I have had several mothers ask me to let them know if I see a difference in their child's behavior (particularly if the child misses their medicine that morning).
Teachers are allowed to tell parents about the specific behaviors they see. For example, I could say, "Ms. Doe, I have observed lately that Sally is tapping on her desk with her pen everytime I call on a student sitting at her table." I could not say, "Ms. Doe, Sally seems to be struggling with jeolousy or a need for attention every time I call on someone near her." Because for all I know Sally might be tapping out of fear rather than jeolousy. So I could report the behavior, but not diagnosis the reason. Now, having said that, I do know that there are some bad apples in the bunch of teachers, but for the most part, if a teacher is sharing their observation of your child, I would STRONGLY encourage any parent to be thankful and not BLAMING.
I recently had a situation where parents were sending me daily emails asking for feedback on their daughter's behavior. I appropriately let them know of behaviors I observed (i.e. writing notes in class, working on other subjects in Math, playing games on her calculator, not following classroom rules and instructions, etc.). In response to an email I sent home about their child passing notes and lying to me until I asked her to lift up her Math notes which her non-math note was under they questioned my "accusing" their child of text messaging (quite popular at the high schools) just 10 minutes after this child lying to me. I could NOT believe these parents had the nerve to question me even asking their child if they were text messaging...by the way, she wasn't texting, which was why I never notified the parents about that.
Anyways, way too long story a little shorter, I would love to encourage parents to always support the teacher first, then ask questions later--most importantly for the health of the child respecting authority. (Maybe just my personal rant here ;) )...which it doesn't sound like you were voicing your concern at all to or in front of your child.
And I would totally encourage you (if possible) to go observe your child. I have seen parents even observe their child when the child was unaware.
Well...A., I hope that helps...I know it can be upsetting, but I think it really is a gift to have the school letting you know what they think about the behaviors (not necessarily the solution...that I think is your call). Take care...