A computer disk containing personal information of some 15-hundred tech students in Beaver Dam, Fond du Lac and West Bend is missing.
The students have been in apprenticeship programs at Moraine Park Technical College campuses since 1993. They've gotten letters from the school letting them know the disk is missing.
Moraine Park says the information includes names, addresses, telephone numbers and Social Security numbers of apprenticeship students.
College president Gayle Hytrek says there's no reason to believe the records were compromised.
The company that handles the school's technology services says a woman leaving the company was passing along information to another employee when the C-D was misplaced.
There have been no reports of identity theft.