Hopkins High School shut down Wednesday after a power outage in classrooms and the school cafeteria.
The 1,900-student school lost power around 7 a.m., prompting school leaders to close school at 10 a.m. because they wouldn't be able to serve food or have electricity throughout the west wing of the high school.
The school is working with Xcel Energy to restore power, caused by an internal problem. School officials hope to resume school Thursday.
"If we can't serve lunch, we have to let them go," school district spokeswoman Jolene Goldade said, adding that the problem is expected to be resolved within the day, but it could take longer. Families will be notified when more information is available.