In 2009 his book, The Secret of TSL: The Revolutionary Discovery That Raises School Performance was published which explores the revolutionary potential of reducing total student load, the number of students a teacher interacts with on a daily basis over the course of a semester.
他2009年的书The Secret of TSL: The Revolutionary Discovery That Raises School Performance提出探索减少总的学生负担的革命性潜力，学生负荷指的是一个教师一个学期交流的学生人数。