The databases featured in this box are particularly useful for this class. You can learn more about databases on the Research Hub.
Try some of these subject headings related to school spaces in WorldCat@SU:
Here are a few school furniture companies in Texas that I found via Google. While I can't endorse any of these sites, I saw lots of examples of contemporary school desks, tables, chairs, etc. These catalogs can certainly provide you with detailed ideas for your own school design.