Parker St. Onge, right, stands with his brothers Emory, left, and Anderson, center, in front of the Parker Power sign in the windows on Thursday at Windsor Elementary School. The words are in windows on both sides of the school.

Parker St. Onge is seen in photo taken on Thursday at Windsor Elementary School.

Parker Power fundraiser window clings are for sale on Thursday at Windsor Elementary School. It’s a fundraiser for the St. Onge family.

Staffer Lori Urqhart wears a Parker Power wrist band on Thursday at Windsor Elementary School.

The Windsor Elementary School displays its support for third-grader Parker St. Onge with letters in windows that spell Parker Power.

Jacob Mills, an eighth-grader on the school’s basketball team, shaved “Parker Power” into his head in support of Parker St. Onge, a third-grader who has leukemia.