Lori Blomme, 40, collapsed in her classroom at Menlo Park Academy in northeast Minneapolis on Tuesday and was taken to the hospital where she died later that day.
Blomme was leading a class when she collapsed, said brother-in-law David Blomme to the Star Tribune. Wednesday afternoon, Rachel Hicks, a spokeswoman for the school district, said Blomme suffered "a medical emergency".
Students were moved to the school's gymnasium while paramedics attempted to help Blomme, reported the Pioneer Press. The school district sent security and psychologists to assist students and faculty.
Blomme had taught at Menlo Park Academy, a non-traditional high school, for nine years, reported the Star Tribune. "She was one who thought she could make a change and could also learn from her students," said her brother-in-law.
She lived in south Minneapolis and is survived by her husband and two daughters, ages six and eight, reported the Pioneer Press.