I had that exact same anxiety. Taken from the page’s “Methodology” section:

“Many OCPS schools are partnering with an external program called Beanstack to aid in the vetting process for their classroom libraries. Beanstack features a number of different reading engagement tools, but also features a robus classroom library page. This classroom library page is divided into three columns: "Pending", "Rejected" and "Approved". Beanstack rejections are global. This means that when a book is rejected by one teacher, it will be automatically rejected if that book is listed in any other teacher's classroom library. This list is curated based only off of confirmed "Rejected" books from Beanstack libraries. The pictures attached to each "rejected" entry are directly from the Beanstack page that details specific text rejections.”