What Korean language proficiency level is required at Korea University?

Yes, as long as the completion of 12 years of formal education is there, Indian students can submit their high school degrees by CBSE, ISC, IB etc. If these requirements are met, given below are the other docs for the same - 

• Academic transcripts
• 12th-grade completion for 
• Proof of English or

Students should be careful and note that Korea University will reject their application in the following cases-

• Applicants who don't submit documentation before deadline
• Applicants who submit incomplete documents
• Applicants who don't meet the eligibility
• Applicants who lack the required academic skills
• A

Korea University only requires you to submit a portfolio if you're applying for Art & Design program. It should be printed  on A4 size sheet with each sheet containing only a single piece of work. Also statement of verification for Portfolio must be completed by using the KU form provided 

For Humanities or Sciences the application fee for Korea University is KRW 150,000 or 9.2k and KRW 200,000 Arts & Design or 12.3k for UG courses. This fee is non refundable. And once you pay the fee your major cannot be changed and application cannot be cancelled either

Korea University applicants have to submit the following Korean test scores as specified on the university website-

• TOPIK- level 5 or higher (may vary as per course) or 
• Complete the Advanced Korean I course at KU (Intermediate Korean II may also be accepted for some courses)