When did the Mongolians in Inner Mongolia start not to take the senior high school entrance examination?

Mongolian will not take the senior high school entrance examination in 2020.

Just like today's dialects, there is vowel harmony in Mongolian national languages, and vowels in the same word must be masculine or feminine, including various grammatical suffixes-therefore, all suffixes have both feminine and masculine forms. Mongolian is one of the ancient national languages, belonging to Altai Mongolian language family, and its main users are Mongolians.