The SEVIS Fee is a $350 fee charged to applicants for F-1 student visas. You must pay this fee after the I-20 is issued but before you schedule a visa appointment at the U.S. embassy/consulate. Instructions on the payment of this fee are included in an email from the JHU Office of International Services (OIS) at the time the I-20 is issued.
Note: Print the receipt when you pay this fee. More information (including reprint of SEVIS receipt) is available at fmjfee.com. The SEVIS Fee is different from the Machine Readable Visa (MRV) application fee paid with the DS-160 visa application.