Ms Bloor has been a stalwart at the school since it opened in 1995.
She was deputy principal before taking over the top job.
MORE: City of Perth chief executive’s contract in dispute
Get in front of tomorrow's news for FREE
Journalism for the curious Australian across politics, business, culture and opinion.
READ NOWMORE: Guide Dogs WA supporters and staff to skydive into Rockingham Beach
MORE: Kalamunda’s Little Cinema reopens
Ms Bloor chose teaching because she enjoyed her own school years.
“So choosing teaching was a natural progression,” she said.
“It was very rewarding establishing and maintaining Riverside Primary to be such a great school.”
Ms Bloor said she has fond memories of the school.
They include the development of past and present students, the wonderful P&C committees, and parents she has worked with.
She also praised her many “wonderful staff”.
“One-thousand-two-hundred staff have worked here with me over the years.”
Ms Bloor said the job had changed over the years, becoming less teaching focused and more operational.
She won’t be relaxing post retirement but will instead be taking on a swim training regime because she plans to swim around the Greek islands.