The aim of this research is to answer as following two problems. Is the difference between learning experience, age, place of born and feedback method to (1) principle leadership in national examination preparation, (2) Understanding teacher in national examination materials. Base on Anova non-parametric or Friedman and descriptive analysis from 121 respondence has been gotten the following result. First, teacher perception to the principle leadership in national examination preparation base on (1) teacher experience , (2) teacher age, (3) place of teacher born, (4) feedback method are significant. Second, teacher perception to understanding of national examination materials base on (1) teacher experience, (2) teacher age, (3) place of teacher born, (4) feedback method are significant. The detail information, please read of this research.!