Penny your frustration as teacher is precisely the point. In the interest of an immediate profit and for "legitimacy" they stiffle the spirits of those who will become consumers.

For want of few dollars profit they lost potential consumers of recorder music and recorder instruments in the following decades.

The child the grows to an adult. Like the copyright police the software police in the schools constrict the education of future consumers of Adobe Photoshop, and Coral Draw, and MS Office Suite. The child is producing childish things there is no material gain. As an adult consumer however, these are the products that they would turn to.