The first Carlsville School District No. 3 school was a log building on one acre of private land owned by Thomas Carmody Sr. and his wife Margaret, where Margaret Kinney was paid $149 to teach during the 1869 school year. In 1879, the Carmodys officially sold the acre to the school district for $13, and for almost 100 years all future Carlsville schools stood on this same tract of land. At a special school meeting in 1894, the community decided to build a new one-room frame school at least 24 feet by 40 feet, and Septimus Stephenson was paid $519 to construct it. In 1898, another special meeting approved fencing the school yard at a cost of $50. A teacher, Peter A. Anderson, taught 62 students there in 1900. The last two-room school in Carlsville was built in 1919 and still stands. William and Anna Urban deeded an additional acre to the school in 1924. The school closed in 1965 when it merged with Sevastopol Consolidated schools. Henry Paschke bought the school on September 18, 1972, for $1200 and sold it to the Door Peninsula Winery on August 7, 1974, and the original building still stands as the winery entrance.