| District Name | Hartland-Lakeside Joint No. 3 School District |
| State | Wisconsin |
| County | |
| Statistical Area | Milwaukee-Waukesha, WI |
| Cities/Towns | |
| Total Students (2021) | 1102 |
| District Growth Rate (2017-21) | -4.0% |
| Majority Race/Ethnicty | White (87.8%) |
| Free/Reduced Lunch Program | 21.05% |