In August 2017, Stacy Bailey, an art teacher at Charlotte Anderson Elementary School in Arlington, Texas, introduced herself to her fourth-grade class with a slide show of her childhood, parents, friends and family.

Included in the mix was a photo of her with her partner, Julie Vasquez, who Ms. Bailey explained at the time was her future wife. They were dressed as “Dory” and “Nemo” from the movie “Finding Nemo.”