About a month before the big day, the school community at Garfield High in East Los Angeles prepared a unique day for Encinas with a full agenda.
Encinas arrived at the entrance of the school with her family where she was greeted by school officials and JROTC students with a red-carpet welcome.
She then hopped on a school golf cart for a campus tour.
Along the way, Encinas made a stop at the school's quad where students and the school band surprised her with a birthday serenade.
Part of the Encina's 100th birthday itinerary included a walk down the hallways where she visited classrooms.
"What was your greatest memory here at Garfield," a student asked Encinas.
"Flirting," Encinas responded as the class laughed with her.
Following the classroom visits, Encinas ended her day at the school auditorium with a special serenade by the student mariachi group, a special presentation and a Q&A with the students.
Encinas shared the most memorable moment of her life and her secret to longevity.