It has been deemed suitable that the elective courses can be conducted for two lesson hours a week by beginning from first and fifth clases at all public and private schools by the Ministry of National Education with the Board Of Education meeting decision No. 124, dated 14.08.2012. By this research, factors in the selection of courses in elective courses application started in the academic year 2012-2013, preferred causes and practices in the courses and problems in the causes are evaluated according to students' and parents' opinions. The descriptive method has been used in the study. Student and parent questionnaires have been used as the data collection tool. It has been benefited from the program SPSS to analyze the data and the frequency and percentage calculations. According to the results of the research, the most frequently selected subjects are listed as Applications of Mathematics Course, Quran Recitation and Foreign Language Course. When students' reasons to choose elective courses are examined, according to students' opinions it has been found out that they make their choices according to their interests and skills; however in accordance with the opinion of parents in determining their choice, the contributions to the success of the compulsory courses has been found to be the cause.