The Hartland-Lakeside J3 district serves all or some of: Delafield, Hartland, and Merton. Hartland-Lakeside J3 School District currently has 5 single family homes for sale with an average list price of $718,895 and 1 condo for sale with a list price of $1,075,000 that attend the district. The average annual property tax for Hartland-Lakeside J3 School District is $4,402.