The Northbrook School District 27 district serves all or some of: Northbrook. Northbrook School District 27 currently has 15 single family homes for sale with an average list price of $1,010,573.33, 5 townhouses for sale with an average list price of $552,398, and 8 condos for sale with an average list price of $315,587.50 that attend the district. The average annual property tax for Northbrook School District 27 is $10,158.81.