retention model to retain international students in u.s.a universities

Paper details

This is a research paper for my masters program. So i would like to focus on retention model/approach to retain international students in USA universities. Recently i did project on recruitment and retention of international students in my school. I have found out some issues for retaining. So i would like to focus on retention model international students in USA universities/colleges for my another project. Please be detail in approaches/model and literature review. Please send me all details that you do for this project. Thank You!