5 Mistakes International Students Make at Korean Universities (Told by a University Staff Member)

An honest guide from someone who works behind the administrative desk

📌 This article is written from the perspective of someone who currently works as administrative staff at a Korean university. Unlike most guides written from a student's viewpoint, this one shares the "most common mistakes" that I personally see every day while processing international students' documents. I hope this helps anyone who has started studying in Korea — or is preparing to.

Why I'm Writing This

The number of international students at Korean universities grows every year. Working in the administrative office, I meet students from all over the world — Vietnam, China, Uzbekistan, Mongolia, the United States, France, Indonesia, and beyond.

But here's something strange: despite the wide range of nationalities, the mistakes students make are almost always the same. The same mistakes repeat every semester, and every time, students panic while we administrative staff quietly think, "Another one of these cases..."

So today, I want to share the five most common mistakes international students make, as seen from the administrative side. If you read this in advance, your life in a Korean university will be significantly smoother.

Mistake #1: "I emailed my professor but never got a reply" — Email Etiquette Errors

This is by far the most common complaint. One of the most frequent things international students say when they come to our office is, "I emailed my professor a week ago and still haven't heard back."

When we ask to see the email, 99% of the time, we immediately understand why there's no reply.

❌ Common Mistake

"Hi professor, I want to know about the assignment. Can you tell me?"

✅ A Proper Email to a Korean Professor

Dear Professor [Last Name],

Hello. My name is [Your Name], a student in [Department], student ID [Number], currently enrolled in your [Course Name] class.

I'm writing to ask a quick question about the assignment you mentioned in last week's lecture. Could you confirm whether the submission format should be PDF or Word?

I apologize for taking up your time, and I would greatly appreciate your guidance.

Sincerely, [Your Name]

💡 Insider Tip from an Administrator

The professor-student relationship in Korea is different from what you may be used to in Western countries. In Korea, identifying yourself with your department, name, and student ID is basic etiquette. The standard email format also begins with a greeting ("Hello" / "안녕하세요") and ends with a polite closing ("Thank you" / "감사합니다").

Even when writing in English, the same rules apply. Start with "Dear Professor [Last Name]" and introduce yourself before getting to the point. Most importantly — always include your name, student ID, and department in every email. Professors teach over 100 students per semester. They cannot possibly remember who's who.

Mistake #2: "Course registration is closed — can I still add a class?" — Ignoring the Academic Calendar

This is a scene we witness every semester. A student rushes in, breathless, saying, "I missed course registration!"

Korean universities run on a strict academic schedule. Unlike some Western universities where late registration or instructor permission can bend the rules, Korean schools generally do not allow this kind of flexibility.

Approximate Academic Calendar (Most Korean Universities)

💡 Insider Tip from an Administrator

In Korean universities, once the add/drop period ends, you cannot add a course. Period. Even if a professor personally agrees, the registration system is locked.

So, the moment you arrive:

1. Print the official Academic Calendar and stick it on your desk
2. Set every deadline as a phone alarm
3. Check your computer and internet connection 24 hours before registration opens

Course registration day is a server stress test. Popular courses fill up in less than a minute. Write down the course codes of every class you want, save them in a notepad, and paste them quickly the moment registration opens.

Mistake #3: "My visa is about to expire — what should I do?" — Procrastinating on Visa Matters

Visa issues are something even administrative staff worry about, because this isn't a university matter — it falls under Korean Immigration.

❌ Worst-Case Scenario

Students who come to our office one week before their visa expires (or, even worse, after it has already expired) asking what to do. At that point, there's very little we can do to help.

✅ The Right Timeline

• 2–3 months before visa expiration: Visit the administrative office (Office of International Affairs / OIA) to ask about the extension process
• Up to 4 months before expiration: Most students can already submit extension applications
• Prepare in advance: Certificate of enrollment, transcript, tuition payment receipt, and other required documents

💡 Insider Tip from an Administrator

Korea has an official immigration portal called HiKorea (https://www.hikorea.go.kr) where you can apply for visa extensions online in many cases. However, the system isn't always intuitive, especially the first time. For your first extension, always go through the process together with your school's International Office.

One more critical point: in Korea, even one day past your visa expiration means you are in violation of immigration law. Fines apply, and in severe cases, you may receive a departure order. The Korean administrative system is uncompromising on this. Never forget your expiration date.

Mistake #4: "I didn't even know that scholarship existed" — The Information Gap

One of the most heartbreaking moments in administrative work is when a student who genuinely qualifies for a scholarship misses the application deadline simply because they didn't know it existed.

Korean universities offer a surprising variety of scholarships:

• Academic Merit Scholarships: Based on the previous semester's GPA
• International Student-Specific Scholarships: Vary by school
• GKS (Global Korea Scholarship): Korean government-funded
• TOPIK Excellence Scholarships: Based on Korean language proficiency
• Work-Study Scholarships: On-campus work positions
• Living Cost Support Scholarships: For students with financial need

❌ The Common Pattern

Most students assume, "The school will let me know if there's a scholarship." But that's not how it works. University announcements are typically posted on the official Korean-language announcement board. While English announcements exist, they are often delayed or only partially translated.

💡 Insider Tip from an Administrator

1. Check your university's announcement board at least once a week. If you don't read Korean, use Chrome's auto-translate feature.
2. Get to know the staff at your Office of International Affairs. I'm serious. When staff recognize you, they're far more likely to personally let you know when a new scholarship opens.
3. Join your country's international student community at your school. Scholarship information often spreads through these networks first.
4. Prepare your essay and recommendation letters in advance. Scholarship deadlines are often short, so those who come prepared have a major advantage.

From an administrator's perspective, the students who win scholarships are usually the ones with the best information-gathering habits — not necessarily the ones with the highest GPA. A student with slightly lower grades but faster access to information often ends up with more support.

Mistake #5: "I want to take a break — can I just stop attending?" — Misunderstanding Leave-of-Absence Procedures

This is a case we see frequently. A student suddenly disappears mid-semester, then returns the next semester asking, "Why is my student ID gone?"

These students usually didn't formally apply for leave of absence (휴학). They simply stopped attending class.

❌ Things You Should Never Do at a Korean University

• Stop attending classes without filing leave of absence (→ Multiple F grades + risk of dismissal)
• Failing to pay tuition (→ Automatic dismissal + automatic visa cancellation)
• Missing the deadline to return from leave of absence (→ Visa problems)

✅ The Correct Leave-of-Absence Process

1. Discuss with your academic advisor as soon as the reason for leave arises
2. Fill out the leave-of-absence form at your department office
3. Submit it to the Office of Student Affairs (or Academic Records)
4. For international students: additionally notify the Office of International Affairs (this affects your visa)
5. Report the status change to Korean Immigration (your D-2 student visa may require updates)

💡 Insider Tip from an Administrator

For international students, taking leave of absence isn't just about the school. The D-2 student visa is contingent upon active enrollment, so going on leave can change your visa status.

Most Korean universities limit international students to two leaves of absence during their entire degree, each lasting one or two semesters. Also, your right to remain in Korea may be restricted while on leave. Always — and I mean always — consult with the Office of International Affairs before deciding to take leave.

The best option is, of course, not to take a leave at all. But if circumstances force you to, make sure to follow every step of the formal process. The moment you think, "I'll just take a semester off and come back next term," everything starts unraveling.

Closing Thoughts — Administrative Staff Are Your Allies, Not Your Enemies

Thank you for reading all the way through. If the tone of this article felt strict at times, it's only because we've seen too many heartbreaking cases that could have been avoided.

I'd like to end with one request: please don't be afraid of the administrative staff. We genuinely want every international student to graduate successfully and return home with great memories of Korea.

• It's okay if your Korean isn't perfect. Speak slowly in English — we'll figure it out together.
• It's okay if your question feels silly. We answer the same questions every day.
• It's okay if you've made a mistake. What matters most is coming to us early.

The administrative office is your strongest ally during your time in Korea. Use it wisely.

📚 Useful Official Resources

• HiKorea (Visa & Immigration): https://www.hikorea.go.kr
• Study in Korea (Official Korean Government Portal): https://www.studyinkorea.go.kr
• Your University's Office of International Affairs: Search on your school's website

You may also like

• Your First 30 Days in Korea: The Essential Admin Checklist for International Students
• Korea D-2 Student Visa Guide: Common Rejection Reasons and How to Solve Them
• How to Apply to a Korean University: Timeline and Step-by-Step Admin Tips

Daruharu TV — A Korean university staff member's honest guide to studying in Korea