Ware told AL.com her son's response was: "Why not?"
Ware shared a picture on Facebook of the dog pictured with her leash in her mouth next to the photo of Seph, who was diagnosed with muscular dystrophy at the age of 3.
"Seph says that it took about 10 minutes to get Presley to look at the camera -- and who knows how many shots," Ware said.
Ware praised school administrators for their acceptance of Presley, who has been Seph's service dog for about four years.
"We have had issues with his elementary school accepting Presley, so to come to Good Hope and her to be welcomed has been very refreshing," Ware said. "The kids adore her and she loves the attention."
The yearbook photo has gone viral on social media, with many praising the school for its tribute to the service dog.