The phrase "a former educator" is correct and usable in written English.
You can use it to refer to someone who has previously worked as a teacher or in an educational role.
Example: "After years in the corporate world, she decided to return to her roots as a former educator and start a tutoring business."
Alternatives: "an ex-teacher" or "a past instructor."
"As a former educator, Gov. Abercrombie remains committed to early education, quality teaching, and advancing education for all children in Hawaii".
She was a former educator.
As a former educator and a science consultant, I am appalled.
"I'm a former educator so I know about yellow school buses," said Ms. Glasgow, who was celebrating her 75th birthday.
Boisfeuillet Jones, a former educator, federal official and administrator of several philanthropic organizations, died at a hospital here on Wednesday.
Yesterday, two SUNY trustees opposed the budget plan: the student trustee, Stephanie Gross, and Candace de Russy, a former educator.
Unlike recent secretaries, you are a professional educator, a former education school dean.
A respected former educator and a member of the Maryland House of Delegates, Cullison led an organization which had empowered teachers to co-create a professional growth system that included a collaborative approach to evaluation, peer support, and improved professional development led by educators.
As a writer, a stay-at-home mom and a former early educator, these are all important and even necessary for me to survive the summer months.
Boyd K. Packer, the acting president of the second-highest governing body of the Mormon Church, is a 76-year-old former educator with a slight drawl and a brilliant arrowhead collection on the wall of his South Temple Avenue office in the church headquarters here.
LeRoy Walker, a 76-year-old former educator with a rich and varied background in sports administration, was nominated yesterday to become the next president of the United States Olympic Committee.
