This research applies a survey investigation method and uses students from case schools as samples. The research background variables are ¡§a teacher¡¦s leadership skill,¡¨ ¡§students¡¦ notion of class management efficiency,¡¨ and ¡§the difference among administrations¡¦ evaluation of class management efficiency.¡¨ The association between a teacher¡¦s leadership skill and a class¡¦s management efficiency is studied. This research applies a survey investigation method and uses a vocational school from the southern part of Taiwan as the research subject. The participants are 1,569 students from a vocational school and a stratified sampling method is applied. The usage of research tools includes the following: In terms of a teacher¡¦s leading skill, Mu Jin, Chen¡¦s (1999) ¡§the self testing table of evaluating a teacher¡¦s leading skill in a classroom¡¨ is adapted. In terms of the evaluation of students¡¦ notion of class management efficiency, Chen Zong, Shen¡¦s (2006) ¡§the scale table of a class¡¦s management efficiency survey¡¨ and Jin Tang, Qiu¡¦s (2002) ¡§the scale table of a junior high school student¡¦s opinion response¡¨ are adapted. In terms of the evaluation of an administration¡¦s class management efficiency evaluation, the evaluation outcome of a related class¡¦s management efficiency announced by the studied school is used. The research showed that to male, married, long working experience, and natural science teachers, students have the notion of better leading skills. Second-year male senior high school students have a notion that teachers have better leading skills. Both male, married, professional subjects, and teachers from the National Normal University and first year and senior high school classes have better classes¡¦ management efficiency evaluated by administrations. As far as students¡¦ notion of classes¡¦ management efficiency is concerned, male, married, long working experience, and social science teachers have better conditions. Male and second-year senior high school students have better notion of classes¡¦ management efficiency. There is a significant relationship between students¡¦ notion of teachers¡¦ leading skills and classes¡¦ management efficiency and the explanation power is 44.1%. But, the explanation power of students¡¦ notion of teachers¡¦ leading skills to administrations¡¦ evaluation of class characteristics is only 2.6%. Therefore, it is inferred that under the same research subjects, there is an association between teachers¡¦ leading skills and classes¡¦ management efficiency, but it might be over-evaluated.