I haven't heard anything about that, but this is what I found:

A rumor started circulating around 2021 that some schools were providing litter boxes for students who "identify as cats" or are part of the furry subculture.
This claim has been widely debunked by news organizations, fact-checking websites, and academic researchers. School officials from districts named in these rumors have also confirmed that the accusations are false.
In reality, there's no evidence that any school is officially recognizing or accommodating students who identify as animals with litter boxes.
The only reported instance of cat litter being in schools for potential student use was in the Jefferson County Public School District in Colorado, where some teachers were given "go buckets" containing cat litter to be used as a toilet in emergency lockdown situations like school shootings.