1848
The earliest school on the west side of the river in Beloit was taught by Miss Foot.
BeloitGrade A · 1 independent source
The evidence
“The earliest school on the west side of the river was taught by Miss Foot in one room of a frame house, northwest corner of Third street and Roosevelt avenue, in 1848. The next school was kept in a small house on Fourth street about where the fire station is now, and was taught by Harriet Burchard and later by Sarah Burchard.”
1908-brown-rock-county/11-beloit-schools.md, Vol. 1, PDF p. 269 / book p. 246
Brown, William Fiske, editor. Rock County, Wisconsin: A New History of Its Cities, Villages, Towns, Citizens and Varied Interests, from the Earliest Times, Up to Date. Chicago: C. F. Cooper & Co., 1908. 2 vols. archive.org/details/rockcountywiscon01brow, archive.org/details/rockcountywiscon02brow.
Grade A: Found on a page of one of our sources