Thank you for bringing that to my attention. Our school network admin provides a limited selection of themes. I agree with the views on non-GPL products and have decided to shift to a new (and I think better) theme. Thanks again for the information.
Our network admin added me as an admin so I can edit themes. I have used this ability to make some customization to the new theme, called Adventure Journal. But I still have one issue noted in the forum linked below, particularly on customizing my header so that a different image appears for the home page and other pages on the site:
Can any of you help with this?