Students in kindergarten through grade 3 arrive at Petrova Elementary School in Saranac Lake for the first day of class on Sept. 8. (Enterprise photo — Amy Scattergood)

SARANAC LAKE — Kindergarteners through sixth-graders in the Petrova building of the Saranac Lake Central School District will go back to fully remote learning starting Monday, after a YMCA child-care worker tested positive for COVID-19.

District Superintendent Diane Fox announced the news to parents in a robocall Saturday. She said the YMCA employee had last worked at Petrova Elementary School on Thursday.

“Franklin County Public Health will conduct contact tracing and issue quarantine orders as needed,” she said.

Students at Bloomingdale Elementary School and those in grades 7 through 12 will continue with their normal schedules.

Busing for St. Bernard’s School students will follow the Wednesday schedule.

This academic year has been a back-and-forth switch between remote and in-person learning for students here and all over, due to the global pandemic. As staff members and students test positive, classes go online temporarily, then revert.

Normally, Saranac Lake’s plan is for K-6 students to be in class in person four days a week. Graded 7 to 12 have a hybrid schedule, in which they go to school two days a week and learn from home the other three. Wednesdays are remote district-wide so buildings can get extra cleaning.