Kendall attended the New Ipswich Academy in New Ipswich, New Hampshire, for a few weeks in the fall of 1805, and a free public secondary school in New Ipswich for a month in the winter of 1806. In April 1806, he re-entered New Ipswich Academy, paying tuition by working at manual labor. He remained there until the fall, then studied a few weeks in December 1806 at a free public school in Dunstable. Although he was only 16 years old, Amos' education was advanced enough that his father obtained a two-month teaching position for him at a school in Reading, Massachusetts, in summer 1806 and another in the fall at a public school in Dunstable, New Hampshire (now known as Nashua). Amos Kendall entered the Lawrence Academy at Groton in Groton, Massachusetts, in April 1807. Despite poor health, he felt prepared enough to apply to Dartmouth College. He succeeded, and was admitted to Dartmouth on September 10, 1807.