McQueen's arrangement was a modified version of the original Dalton Plan. At least one formal class lesson was given in each subject each week. During the rest of the week, about half the periods, students spent their time in practical work, reading texts and other references under the direction of a teacher who was available for individual and/or group consultation. All work was divided into monthly portions and set out in "Monthly Assignments". Charts in each subject room indicated pupils' progress in that subject and pupils kept their own progress charts as well. Girls who fell behind were required to make up their work on Thursday and Friday afternoons.