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For the past 10 years, the number of Chinese students at U.S. universities has been rising. But university officials are starting to see a sharp drop in Chinese students.

Several universities have reported drops of 20 percent or more this autumn at the start of a new school term. To get more international students, some schools are advertising in other countries and working to keep the number of Chinese students they have.

U.S. colleges and universities need the money paid by students from China and other countries. International students usually pay the whole tuition amount, unlike American students, many of whom ask for financial aid.

University officials and observers say there are several reasons for the falling numbers of Chinese students. They include trade conflicts and political tensions between China and the United States. There also is increasing competition for college students, visa issues and the growth of China’s higher education system.

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