This research was proposed to examine the effect of learning achievement based on case study approach in HRM 391 Human Resource Planning and Placement. The research was also extended to investigation on opinions regarding to case study approach used in the class. After collecting 79 samples from students who enrolled HRM 391 Human Resource Planning and Placement in the second semester of B.E. 2554 by questionnaire, a computer package was used to calculate statistics such as percentage, mean, standard deviation and t-test. The results of the study show that the participated students significantly improve their knowledge in Recruitment and Selection. Regarding to student satisfactions, the average level of satisfaction is in “good level”.