Guǎnlǐxuéyuàn jīnnián zhāo le sānbǎi míng xīnshēng.
The School of Management admitted three hundred new students this year.
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管理学院 is the standard name for a university's business/management school in mainland China. Compare: 商学院 (business school, more common translation of the English term) and 经济管理学院 (school of economics and management, common at many universities).