The Hartland-Lakeside J3 district serves all or some of: Delafield, Hartland, and Merton. Hartland-Lakeside J3 School District currently has 13 single family homes for sale with an average list price of $749,100 and 1 lot for sale with a list price of $299,900 that attend the district. The average annual property tax for Hartland-Lakeside J3 School District is $4,201.