Passage: In Vietnam, a school year is divided into two semesters: the first begins in late August and ends in December, while the second begins right after the first, which is about late January and lasts until the end of May.\n\nQuestion: Based on this passage, when does the school year start in vietnam?
Let's think step by step below.
late August
To answer the above question, the relevant sentence is: In Vietnam, a school year is divided into two semesters: the first begins in late August and ends in December, while the second begins right after the first, which is about late January and lasts until the end of May.

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The final answer: late August