The preschool Class of 2015 is ready for kindergarten! About 125 four-year-olds graduated from the district’s preschools. They will become the high school Class of 2028 this fall. At Lily Lake Elementary, more than 2 dozen students in morning and afternoon preschool donned homemade caps and tassels for their graduation ceremony. It was a bittersweet moment for their parents and grandparents as they watched them reach this education milestone and move on to the next chapter in their lives.