Groton — Groton Superintendent Susan Austin said school officials learned Saturday that members of the S.B. Butler Elementary and Groton Middle schools tested positive for COVID-19. 

She had also said, in a separate notification on Friday, that school officials learned that day that members of the Groton Middle School community tested positive for COVID-19.

"We have collaborated with Ledge Light Health District to determine and have already notified all close contacts within the school," she wrote in the notifications. "The affected individuals have been instructed to isolate at home following public health guidelines."