The McCollom Institute, in Mont Vernon, New Hampshire, until 1871 called the Appleton Academy, was a high school between 1850 and 1906, when it closed due to low numbers. It was owned and operated by the local trustees of a trust which continued for many years after the end of its school.

Mont Vernon is a town in Hillsborough County, New Hampshire, United States. The population was 2,584 at the 2020 census, up from 2,409 at the 2010 census.