He created the month-long Winter Term which allows students to spend four weeks in January to enroll in one intensive course or pursue independent research or internships. Armstrong is credited with laying the groundwork for Middlebury's emergence as a nationally renowned institution, significantly growing the College's enrollment, endowment and physical plant.
Armstrong created the Winter Term, which allows students to engage in concentrated learning over four weeks in January. This initiative contributed to Middlebury's development into a highly regarded institution, resulting in substantial increases in enrollment, endowment, and physical expansion.