Use of the self-report as an indication of stable behavior for school children The research aims to identify the impact of of using the questionnaire about the screen as an indicator on the level of physical inactivity as well as identify the relationship between the level of physical activity for students of sixth grade primary MVPA in Al-Ahsa Governorate in Saudi Arabia, and the researcher used the descriptive method, and the subject included 76 male and female students from the sixth grade of primary school in Al-Ahsa during the year 2016 and the researcher used to collect data(anthropometric measurements and the accelerometer and questionnaire). The mean, standard deviation, test and F test were used to treat the research data . the important results was that the time spent in front of the screen is not considered an indication of physical inactivity and that it constitutes a small percentage of physical inactivity. As the decrease in elapsed time in front of the screen will not lead to an increase in the level of physical activity. This makes us assure that the two behaviors need to be seen separately from each other.