Students at the Madison College Truax campus were asked to stay inside the building because of an emergency in the area Thursday morning.
The lockdown was lifted at 8:38 a.m.
Madison police said they took precautions because they received information that there was a suicidal person heading for the Truax area, but the threat never materialized.
The incident was also a test of the campus alert system.
Madison College administrators immediately put the school into lockdown after Madison police informed them of the threat.
A Wolfpack Alert, the school's emergency information system, went out to students and staff telling them to stay inside, draw blinds and shelter in place.
The school's communications manager said he's proud of how everyone cooperated.