Grace Academy didn't have classes Friday because many students and teachers were sick with either the flu or a stomach virus, School Administrator Lynn Wakefield said.
On Thursday, more than 50 Grace Academy students and four or five elementary school teachers either were out sick or went home sick, Wakefield said.
School officials were having difficulty finding enough substitute teachers, he said.
Parents were notified Thursday night that classes would be canceled, he said. Wakefield said classes will resume Monday.
Students were out sick throughout the week, so teachers were repeating lesson plans, Wakefield said.
"If not for staff members, (we) probably could have continued on," Wakefield said. "But when you don't have staff members taking care of the children, what can you do?"
The illness apparently lasts 24 hours, said Wakefield, who went home sick on Thursday.
The 13321 Cearfoss Pike school has 363 students in preschool through 12th grade, he said.