The first one room schoolhouse was built in Dartford in 1845 on the southwest corner of the present public-school site. This building not only served as a school but was also used for church services while churches were being built. For one summer the building was even used as a home. The Root family needed a place to live as they were building their home.
In 1860 it was necessary to enlarge the school, so a second room was built. Later, a vestibule, a belfry and a flagpole were added. This building served Dartford well in the 1890s when the school board made an appropriation for $4000 to build a new school. The building you see in these cards was built from 1898 to1899. Joe Thrasher Jr. bought the old building, and he used it as a shed on his farm just north of town for many years.
The new school building had two stories, with two classrooms on each floor. There was an office and library on the second floor. In a short time, more room was needed. In 1904 two more rooms were added on the first floor and an assembly room for the high school on the second floor. By 1913, the final addition was added to the north end of this building. A connecting hallway and rooms to house the first four elementary grades.
In 1957, the people of Green Lake decided that it made more sense to build a new building to house the elementary school, instead of adding on to the old building. By 1957, it was decided to build a modern high school attached to the elementary school. On May 19, 1957, last day ceremonies were held at the old school building, and the next day it was demolished. As soon as the building was demolished, construction was begun on the new gymnasium on the site of the old school building.
In 1965 after more than a century of progress for the school on the hill at Green Lake, a new modern addition on the north end of the elementary school was completed.

Heritage History of Green Lake p179-184