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To request a change to F-1 status or to apply for reinstatement as an F-1 student, you must submit your original Form I-94, as well as the original Form I-94 of each person included in the application

Your application must include your original Form I-20 (Certificate of Eligibility for Nonimmigrant Student) issued by the school where you will study. To request either a change or reinstatement, you must submit documentation that demonstrates your ability to pay for your studies, and support yourself while you are in the United States.