[9] In 1924, the New Hampshire State Board of Education certified the institute's four-year program to prepare high school graduates to teach art.

From 2002 to 2012, under the leadership of then president Roger Williams, the college's enrollment and physical plant expanded rapidly to encompass over 500 students.

[16] Among the highlights of the collection is a complete set of Alfred Stieglitz’s Camera Work dating from 1903 to 1917 as well as publications and photographs extending as far back as 1864.

[20] In 2016, NHIA announced a new academic partnership with the University of New Hampshire at Manchester that allows students at either college to enroll in classes at the partner institution at no additional cost.

[21] In the summer of 2017 NHIA announced new programs in Comic Arts, Printmaking, and User Experience (UX) Design.

[25] The New Hampshire Institute of Art campus was within the Manchester Cultural District, a six-block area encompassing the Victory Park Historic District that includes several local arts and cultural institutions as well as five historic buildings designed by noted architects William Rantoul and Edward Tilton.