Thousands of dollars in equipment is missing from the schools after the break-ins and vandalism.
Police said someone broke into Dowling School in south Minneapolis Wednesday morning, but the alarm failed to go off.
Thieves hit Minneapolis schools at least 12 times in the past month. Two schools were burglarized twice.
Thieves even stole ice cream sandwiches and Popsicles from an elementary school and the American flag from another school.
Police have made at least seven arrests so far.

