- To test the knowledge and thinking ability of Grade 6, 9 and 12 students according to the Basic Education Core Curriculum B.E 2551 (A.D. 2008).
- To assess their academic proficiency according to the Basic Education Core Curriculum B.E 2551 (A.D. 2008).
- To provide information to the schools to improve their teaching and learning activities.
- To evaluate the quality of education at the national level.
Since academic year 2015, the test in 9 subjects were given to Grade 6 students, Grade 9 students and Grade 12 students.