This study aims to correct or improve the learning outcomes of students in basketball a lay-up at SMAN 12 (Senior High School) Jakarta class X in February 2010, held as many as four (4) meetings, the research method used is the method of action research in the style of teaching practice. In practice, this study uses two stages of the cycle. In the first cycle are identifying and providing learning concept lay-up basketball through the practice teaching styles. Cycle to two, the choice of practice teaching style aimed at learning the motion activity lay-up basketball and effectiveness of the technique in accordance with the theory. Mastery learning standards set by the SMAN 12 (Senior High School) Jakarta for physical education subjects is 60. Alteration or improvement of student learning outcomes in learning the lay-up basketball with the teaching style of practice occurs during the Final Test. Existing data on the value of the initial test basketball lay-ups by 27.5% or as many as 11 students and test scores finally 100% then learning the material lay-up basketball with the teaching style of practice increased by 72.5%. So it can be concluded that the results of research, teaching style of practice can improve learning outcomes lay-up basketball at SMAN 12 Jakarta.