The JLPT is a standardized test that evaluates and certifies Japanese language proficiency. In Japan and select other countries it’s held twice a year, while in other countries only once a year.

Top–J is a standardized test to certify the proficiency of non-native speakers of the Japanese language. The test result is used for different purposes like entrance requirement for educational institutes in Japan.

The NAT-TEST measures the Japanese language ability of students who are not native Japanese speakers. The tests are separated by difficulty and general ability is measured in 3 categories.