At the end of each year, students must take a test in order to move on to the next level. If the student cannot pass the test, they may have to repeat the last completed year or may be given an option of attending a summer school programme at the end of which the student will be retested. Students cannot continue to the next level until they pass the test. However, it is not common for students to be held back as, typically, the student can take the test again with the assistance of a teacher. This can be repeated until the student passes the required exam.
After completing the final obligatory year, M3, students who wish to continue their education must take the Ordinary National Educational Test (O-NET). At the end of M6 they take the Advanced National Educational Test (A-NET) in order to graduate. Graduating from M6 is the equivalent to graduating after taking A levels, the International Baccalaureate or the Standardised Achievement Test (SAT) in the US.
In order to attend a university after graduating from M6, students must pass the Central University Admission System (CUAS). This system is based on the scores of the O-NET and the A-NET as well as the Grade Point Average from M4.