How long does it take to apply for a green card at a university in the United States? What are the conditions?

It usually takes 1~2 years, provided that you get a work visa.

The key for students studying in the United States to get a green card is to get a work visa first. General international students can apply for 12 months internship visa (OPT) before graduation, and they can use this time to find internship jobs. It should be noted that the job they are looking for with an internship visa must be in line with their major. Students can apply for an H- 1B visa (that is, a special professional/temporary work visa) to stay in the United States legally after successfully finding a work unit. Students who have obtained an H- 1B visa can apply for a green card after working for 1-2 years.

In the United States, students who graduated from some science and engineering majors such as biomedicine, physics and computer can get internship visas for up to 29 months. At the same time, accounting is also a major that is beneficial to immigrants. As long as you are admitted to CPA (Certified Public Accountant) in North America, it is equivalent to a green card in sight. Therefore, it is very important to follow the guidance of professional international students and choose a major that will facilitate immigration in the future.