It is possible to do the simpler quilt tops, in a day. I was around when this concept began and the classes were formed with two people working on a quilt. Strips were precut before the class. One partner sewed while the other pressed and cut units. That way it really was possible to make the top in a day. The following week the same two people came back and the sewer, then pressed and cut and the presser sewed her/his quilt top.