I-20 Form

What it is

The Form I-20 is the bridge document between US college admission and US student visa approval. After you've been admitted to a US college, completed your Certification of Finances, and committed to attend (May 1 deposit), the school's international student office processes your information and generates an I-20 specific to you. The I-20 is then mailed to you (or pickup-able from the international student office, depending on the school).

The form is multi-page and contains:

• Your name, date of birth, country of citizenship
• Your SEVIS ID — a unique tracking number assigned by the US government's Student and Exchange Visitor Information System (SEVIS)
• Your DSO information — the school's Designated School Official, the staff member responsible for international students at your school
• Your academic program — major or general category, degree level (Bachelor's, Master's, etc.)
• Program start and end dates — when you must arrive in the US, and the latest expected graduation date
• Estimated annual cost of attendance, financial aid received, and the source of remaining funds
• Signature lines for you and the DSO

The I-20 is the document the US embassy uses (along with your visa application) to determine whether to grant you an F-1 student visa.

Where I-20s come into play

There are several moments in your US college journey when the I-20 matters:

1. F-1 visa interview at US Embassy — you bring the I-20 to your visa interview. The consular officer reviews it as part of approving your visa.
2. Initial entry to the US — when you fly into the US for the first time as a student, Customs and Border Protection inspects the I-20 along with your passport and visa stamp. You must arrive within 30 days of the program start date listed on the I-20.
3. Re-entry after travel abroad — every time you leave the US during your studies and re-enter, you need a current I-20 with a valid travel signature from your DSO (signature is valid for 1 year).
4. Program changes — if you change your major significantly, change your program length, or transfer schools, you receive a new updated I-20.
5. Maintaining status — your I-20 is your "passport" for proof of legal student status while in the US. Carry it (or a copy) when you travel within or outside the US.

Common Korean student questions

Can I get my I-20 before paying the deposit? Usually no. Most US colleges issue I-20s only after the student has confirmed enrollment with a deposit, because the I-20 starts a SEVIS record and the school doesn't want to create records for students who won't actually attend.

What if my I-20 has a typo? Email the international student office immediately. They can issue a corrected version. Common errors: misspelled name, wrong date of birth, incorrect program length. Don't accept a flawed I-20 — fix it before the visa interview.

What if I lose my I-20? The international student office can print a duplicate, but losing it is a hassle. Make 2 photocopies the day you receive yours: one to leave with family in Korea, one to bring with you to the US separate from the original.

Can I take a year off and use the same I-20? No. If you defer enrollment for a year, your school will issue a new I-20 with new dates when you return. SEVIS records are tied to specific timelines.

What about OPT and CPT? These are separate work-authorization mechanisms that begin during your degree (CPT) or after graduation (OPT). They're managed through your DSO and don't require a new I-20 — they get noted on your existing I-20 with updated employer information.

Why this matters more than Korean families expect

The I-20 is the single document that legally connects you to the US as a student. Your visa is a stamp in your passport, but the I-20 is the certificate of why that visa was granted. Without a valid, current I-20, your F-1 status falls apart — you become technically out of status, which can affect future US visa applications, OPT eligibility, and even immigration consequences.

Korean students sometimes lose track of their I-20 once they're settled at school, treating it as "old paperwork." Don't. Update it whenever your program details change, get it signed by your DSO before any international travel, and keep it in a safe place separately from your passport. Treat it like a second passport — because legally, that's exactly what it is.