one of many downsides to underfunded school libraries with no actual trained or qualified librarians is that the school "librarians" will say things like "chapter books are dinner and graphic novels are dessert" and "students can only check out one graphic novel or comic at a time" and "I don't want the kids to read graphic novels because they're badly written" (as if there aren't badly written prose books too)
understandably this is driving my mom, who has an MLIS with a specialty in youth services, up the freaking wall — these arbitrary rules that so many adults place around comics serve only to further hamper children's interest in reading by presenting prose as a punishment or something to tolerate at best, discouraging the exploration of more experimental forms of writing such as hybrid novels, and discouraging children's interests in art and sequential storytelling itself.
Like, man. Even if reading comics wasn't a useful stepping stone or entry point into reading longer works of prose (which it very much can be), kids (and grownups) should be allowed to read comics if they like them! You work in a library! You should be encouraging reading in all forms, for its own sake!!