This study investigated the attitudes of primary school students towards computer based testing and assessment in terms of different variables. The sample for this research is primary school students attending a computer based testing and assessment application via CITO-OIS. The "Scale on Attitudes towards Computer Based Testing and Assessment" to collect data and the results obtained were compared in terms of school type, gender, and grade level. The results of this study revealed that significant differences exist between attitudes of students from different schools. Such a difference does not exist between attitudes of students when their genders, grade levels, and participation periods to computer based assessment are taken into account. (Contains 4 tables.)