In 1826, Muhlenberg moved from Lancaster to Flushing, on Long Island. Two years later he opened the "Flushing Institute." By the generosity of Miss Yeates, Kerfoot's Sunday School teacher in Lancaster, the twelve-year-old Kerfoot was enabled to attend the Flushing Institute, where he was again "under the care and instruction" of Muhlenberg. At age 14, on February 24, 1830, Kerfoot wrote about his gratefulness for being in Flushing Institute under the influence of Dr. Muhlenberg. In March 1832, Kerfoot wrote about spending his seventeenth birthday at the Flushing Institute and about having a paper on "Private Prayer" he had written published in the "Churchman".