☆.A.
It's just plain mean-spirited to NOT have the entire class sign the card.
It's exclusionary. It's also presumptuous to assume that all want to or can give. For what? To set kids up for ridicule a d bad feelings be ause of their parents decision or finances.
When faced with this in preschool, and room moms that were NOT going to let every child sign, I vowed never to be involved in a group gift again.