But the directors decided to put the seminary in Rockford, and this became the basis for Rockford College. Despite this setback, Mack saw to it that a classroom was set up in the second story of a house. He insisted that the settlement's girls be allowed to attend as well as the boys, and the classroom was even open to the Winnebago children. In spite of the care he took to see that his own children were educated, it is recorded by Edson Carr that one of his daughters was too wild and often walked out on classes, and it is said that Mack eventually gave up on educating her.