In general, US universities typically require applicants to have completed 12 years of primary and secondary education (high school) before being eligible for undergraduate programs. However, some universities may consider accepting students who have completed 15 years of education, such as those who have earned a three-year Bachelor's degree in India. Each university has its own specific requirements and policies regarding admissions, so it is best to check with the individual universities that you are interested in attending to see if they accept 15 years of Indian education. Some universities may require additional coursework or testing to make up for the difference in education years. It is also important to note that meeting the minimum education requirements is just one aspect of the admissions process, and universities will also consider other factors such as test scores, extracurricular activities, essays, and letters of recommendation.