The Northbrook School District 27 district serves all or some of: Northbrook. Northbrook School District 27 currently has 11 single family homes for sale with an average list price of $997,809.09, 5 townhouses for sale with an average list price of $634,780, 12 condos for sale with an average list price of $296,233.33, and 1 lot for sale with a list price of $379,500 that attend the district. The average annual property tax for Northbrook School District 27 is $10,687.79.