The purpose of this study were to analyze the problems and the effects of motor lerninf after portfolio assessment in the classroom of physical education. Each two calsses in a elementary (the fifth grage: boy 45, girls 30) and a middle school (the second grade: boy 76) were involved in the study, in which a class hired portfolio assessment and the other applied traditional assessment. Elemenraty school was classified by gender and assessment\'s method, and middle\'s was classified by assessment\'s method. The tasks used in tihs study were simple soccer. 400mR. a leg hang climing of horizontal bar in elemantary school and were under toss, over toss, serve of volleyball. long jump in middle\'s, 3 classes of each task were learned by 3 hours in elemanrary \'s and 6 hours in middle\'s. Pre-and post-test results of learning effect in each task were analyzed by ANCOVA. Significant level of all analyses was set at p <.05 Results of the study were as the following: 1. In elementary school, learning in dribble of soccer and a leg hang climing of horizontal bar was higher in portfolio\'s class than traditional\'s but 400mR was traditional\'s 2.And. in portfolio assessment\'s class. leanrning in soccer\'s and horizontal bar\'s was higher in girl\'s group than boy\'s 3. In middle school. learning in all tasks was higher in portfolio\'s class than traditional\'s 4. The problems in the portfolio assessmentwere difficulty of task target eatablishment each learner, to grow up individual difference in learning, to reveal at reliability and validity of test, and present heavy duty of teacher.