The 83-year-old has pushed his last wheelbarrow, but not before doing "a bit of everything" around the school, from clambering on roofs to fix the guttering to moving school supplies across rooms.
"I started in the late 1990s. I popped in for some reason, in the middle of winter, and the principal said she was scared, really frightened, because it was absolutely pitch black and that the security light was out.
"Then me, not thinking, says, ‘Oh, hell, I can fix that,’ right? Which I did. Then she said, ‘well, can you fix this and can you fix that?’.
"So it grew from there."
Mr Pearson said he would write the jobs down in his book — he has filled more than four of them in his time at the school.
It came from his practical philosophy, he said.
"My outlook was, basically, if all the people that support the school, which is the board of trustees, of course, and the parents, leave the teachers just to teach, it must benefit the kids."
Mr Pearson said he enjoyed working on projects, such as building the school sandpit.
Working for the school gave him "a little bit of extra pocket money" in his retirement.
He often reflected on how many people had come through the school during his time.
"I’ve seen three complete turnovers of staff."
Many former pupils kept in touch with him.
Acting principal Bronwyn Bradshaw said it would take a lot to replace Mr Pearson.
"He’s a likeable old rogue; he’s just lovely.
"He’s down to earth, calls a spade a spade."
Ms Bradshaw said she would miss his interactions with the school’s pupils.
"One year, there were a group of pupils playing four square after school.
"He noticed they weren’t playing it right, that they were making the rules up as they went along.
"So, he showed them how to play it properly. He’s more than just a caretaker."
