The aim of the study is to explore the academic achievement and performance tasks of students studying in a regional primary boarding school in science course with regard to different variables. The study was carried out via survey method and total 96 students, 57 of them boarding students and 39 of them non-boarding students studying in the 5th, 6th, and 7th grades in a regional primary boarding schools, participated in the study. The data of the study was obtained from the academic performance grade point average which the students got from three different exams in Science course and performance grade point average the students got from two different performance assignments (preparing a poster). MANOVA and correlation analysis were used for the statistical analysis of the data which were collected to seek answers for the sub-problems stated within the general framework of the research. The findings revealed that there is not a significant difference between the grade levels and the students' academic achievement scores and performance scores in science course, whereas a significant difference was found between the gender variable and performance scores, which was in favour of females. This result suggests that female students were more successful than male students when compared to performance assignments. Moreover, a meaningful difference was detected in favour of non-boarding students with regard to their academic achievement in science course and their grades in performance assignments. Finally, it was found that there was a moderate positive correlation between the students' academic achievement scores in science course and performance scores in performance assignments.