These easy to print cards can be printed to be a postcard or a card. They are regulation size for the US postal service. They have just enough room on the back for a short welcome message to your new class or a new student.
If you are interested in buying these for your whole school or more than one classroom, use the Multiple License option above (where the first is full price and the rest are half price) or use the Purchase Order option, which is a link at the top of the TpT page. A single purchase of this product is a single user/single classroom license. The single user license does not however, allow one to make multiple copies or printings of them for use outside of one classroom, or email or distribute electronically, resell or claim as your own.