Yes, elementary school.
Via CNS News:
Miraloma Elementary, a grade school in San Francisco, has instituted a policy of gender-neutral bathrooms. The school is changing restroom door symbols accordingly.
“There’s no need to make them gender-specific anymore,” Miraloma Principal Sam Bass told the website SFGate.com. “One parent said, ‘So, you’re just making it like it is at home.’”
A 2013 California law requires schools to allow students to use the bathroom consistent with their gender identity, and San Francisco has had a similar policy on the books since 2003. While many schools in the country have separate restroom accommodations for students claiming to be transgender – a condition in which a person identifies with a gender different from the one they are born as – Miraloma is rare in its order to change all of its facilities to be free of any gender signifiers.