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Arizona State University F-1 students currently on 12-month Optional Practical Training who are eligible and interested in a 24-month STEM extension should apply now. OPT STEM offers international students the opportunity to gain additional off-campus work experience in their field of study after completion of course studies. The 24-month STEM extension is an additional benefit from U.S. Citizenship and Immigration Services that allows international students in F-1 status who receive a bachelor’s, master’s or doctoral degree in an approved STEM field to apply for a 24-month extension of their standard 12-month post-OPT period.Next stepsSee if you have a STEM designated degree.Read the instructions and additional information about the 24-month STEM extension. Employment must be with an E-Verify employer.To receive your 24-month STEM extension I-20 for the application, submit your request to the ISSC office 100 days prior to the end date of your Employment Authorization Document card.