Frederick Hollis reads along with first graders at Tallahassee's Oak Ridge Elementary, but these children only know Hollis by one name, Grandpa Hollis.
"I am a celebrity, sometimes I have to examine my head to see if my head size changed, because I hear grandpa so much," said Frederick Hollis.
Sally Feehrer is the class’ teacher and said, "He's famous, they love him, and I don't think they'll ever forget their experience with him."
On the eve of his 93rd birthday, Grandpa Hollis stays on his toes working as a foster grandparent.
"Sometimes it taxes me to keep up with the kids," said Hollis.
Five days a week, Grandpa Hollis brings discipline and wisdom into the classroom.
"Grandpa is a nice man, he helps us learn and he gives us SRA cards to challenge our skills," said Deanthony Swatzie, a first grader at Oak Ridge.
It’s a challenge that's proved successful.
"Half of our children now are reading above grade level, because of the way he has done this, I wish we had one in every classroom," said Feehrer.
Alexis Evans loves Grandpa and said, "Grandpa is a nice man, he is a special spirit."
The children aren't the only ones who benefit from the experience.
"I get a lot of enjoyment, pleasure, it's a reciprocal thing," said Hollis.
Hollis volunteers at the school through elder care services.