Customize the message above your store

Add a custom message that will appear at the top of your cart. Include information about your organization and why it's important to support and contribute.

Go to  Account Settings / Store / Custom Header 

Tips for this message:  Keep it simple.  A welcome message with your school's name and some text to let them know what is for sale.  You may also include a link to your parent association website so they know more about what you do and why they should contribute.