Prepare perfectly for the 2026 CSAT with the EBS mock exam series!
Experience the real CSAT in advance! A mock exam with premium questions, available only on EBS.

'EBS Perfect Score Wrap-Up Envelope Mock Test High Difficulty Hyper' is a combined Korean, Math, and English test that contains high-difficulty questions to help you prepare for the difficult CSAT in advance.
You can further develop your sense of the actual exam just before the exam with this high-difficulty mock exam that perfectly reflects the latest trends in the CSAT and mock exams.
Practice like the real thing! We provide OMR cards that can be used for self-study mock exams.
EBSi offers 100% free lectures! Available online and via the "EBSi High School Lectures" smartphone app.