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 $1,050,040, 3 townhouses for sale with an average list price of $725,333.33, and 12 condos for sale with an average list price of $298,899.17 that attend the district. The average annual property tax for Northbrook School District 27 is $10,623.87.