No way, they eat what all the others eat or they go hungry! I am a firm believer on you making the choice for the child not the child making the choice for you! Who's the Boss?? I also, ALWAYS inform the parents of my beliefs, no child should refuse what is offered and should never get to choose what they eat, (puts the ball in the wrong court)...chances are...if they control the dinner table at home, they are controling in other areas as well....and that is not a healthy way to raise a child. Not to mention, missing a meal or two can be good for a "picky eater", maybe when the same thing is offered again for supper they will be more (hungry) willing to try it this time.
The shame in it is...we can only try so much to correct the problem but if the parent isn't willing to try at home, we have wasted our efforts. I don't dwell too much on picky eaters, although I DO inform parents of their lack of interest in the food that was served for lunch that day.
Once in all my years, I had a Mom ask for the lunch to get wrapped up for supper that night. I was more than happy to do that for her, and she got her daughter to eat her food. Not without a fight though!