Breakfast at School

Yes, call her. She may not be the one that is with them at breakfast. If she's not, she will tell the person who is. If you can't get in touch with her right away in the morning, talk to someone in the office. They will make sure that he gets breakfast.

Maybe they showed all the kids the first two days of school and your son didnt buy until the third day? Note to parents if you plan for your child to EVER buy lunch or breakfast during the year, have them do it the very first week when the aides are expecting the kids to need help and showing them what to do. By late Sept. they assume the kids already know

If your child is that reserved about asking for help, please try to attend as many school functions as you can, particularly parties and such. My daughter was like that and she doesn't like to drink anything but water (or milk)...not soda, not caprisun or juice boxes.... nada. Well, everytime the class would have a party, the parents would pass out the soda or juice boxes or whatever... and my daughter would receive one and sit and not drink it (because she doesn't like them). But she wouldn't advocate for herself and say "excuse me, can I just get a cup of water instead?"... she'd just sit with nothing she would/could drink for the entire "event".....
It was to the point that the little teacher questionnaire things that you fill out for your child ("anything I should know about your child?") from open house, well, all of mine had a line about my daughter ONLY drinking water and specifically mentioning that she had a tendency not to ask for water when given something else.
If he is that reserved, then there may be other areas that you are unaware of where he is not getting what he needs b/c he doesn't speak up for himself. So, just be mindful of that and try to visit him at school to observe first hand what goes on. Then you can teach him the appropriate things to do and help him get a little support with this from the teachers as well. :)
And--saw your what happened. That is great. NEVER be worried to call the teacher about something that is affecting your child's learning experience. (And skipping breakfast does affect their learning experience).

You don't take him down? Maybe you work and just drop them off. The first week of school I park the car and take the kids down so they get in the habit. The ladies get to know them and can call them by name after that. The ladies always help my gran-kids with their milk and juice straws, opening everything. I appreciate them so much.

my friend's little girl started kindergarten this week too, she got in line with the other kids and has been getting her lunch, but she is only 5. she has been forgetting to give them her money. so then the school calls my friend and wants their money for her lunches....

i really think they are expecting a LOT from a bunch of 5 year olds. i would call the teacher, maybe it is just an oversight. they are so little....we DO have to TEACH (haha) them these things...it's not like they just magically get to kindergarten and all of a sudden they know all this stuff...

but then when i was in kindergarten, i learned my abc's and 123's...and my son's preschool (and myself) have taught him all of that, and colors, shapes, etc....aaaallll this stuff i thought kindergarten was for....so maybe they don't think they should have to teach them other things too :P just kidding. mostly.

Talk to his teacher. They can really help you if you ask. Explain that he is shy and will not ask for help. At the end of the day or the week, when you pick him up, make it a practice to ask how he behaved, etc so she knows you are interested. You will build a rapport with her that will serve you and your child in the long run.