Usually they are run by a state government. Admission is easier. Two years at a community college can help an international student improve language skills and grow accustomed to the U.S. educational system and way of life. Costs are less. Community colleges are often smaller than four-year institutions.
Classes are smaller, too.
Teachers and advisors are able to provide personal attention to students. Many U.S. and international students say that attending smaller schools for the first two years helps them make a good transition into larger four-year schools for the final two years. Introductory classes in community colleges often stress a supportive rather than competitive environment. In the U.S. educational system, students compete for good grades. International students who do not speak English fluently are at a disadvantage.