Science begs to differ.

SAN JOSE, Calif. – Piedmont Middle School’s annual “Diversity Day,” included Cuban music, dance, jazz, hip-hop, and a transgender man who grew up a girl in Southern California.

Volunteers helped to organize the event and some parents brought foods representing their cultures while students were rotated through the classrooms to hear 16 speakers “representing different races, disabilities and sexual orientations.”

The driving force behind the annual celebration is the combined effort of Piedmont art teacher Kim Lipkin and film class teacher, Anne Smith, according to San Jose Mercury News.

It was in Lipkin’s classroom that students heard the story of Ali Cannon, a transgender man who grew up a girl in Southern California.

“Cannon talked about his journey, including feelings that he was different, rejection and ostracism by other girls in middle school and his final decision to change his gender.”

“We think of boys and girls in terms of biology, what’s between your legs,” Cannon said, “when gender is really a lot more than what your genitalia are. People identify all along the spectrum of what they feel inside.”