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주영훈
Reviews
81
"Please don't scold your child for their handwriting. It is a structural issue." "Hello, this is Teacher Joo Young-hoon from Geulteo." "Teacher, my child's handwriting is a mess." This is the phrase I have heard most often over the past 12 years. However, after examining the handwriting of over 800 children, I have become convinced of one thing: there is no such thing as a child who cannot write well. It is simply that their posture is incorrect, they are holding the pencil wrongly, or they do not understand the structure of the letters. Anyone can change if they understand the principles. I am the only handwriting engineer in Korea, having majored in mechanical engineering and researched Korean typefaces for 30 years. By applying engineering design principles of force distribution and structural stability to Korean handwriting, I have independently developed the 'Axis 7,' a principle-understanding-based correction system, rather than simple tracing. When I teach using this system, which analyzes Korean characters using seven physical axes, there comes a moment when the child realizes on their own, "Ah, so that is why my handwriting was like this." That realization changes their handwriting, and when their handwriting changes, even their attitude toward studying changes. You can experience the change firsthand in just one class. ✦ Key Achievements ✦ 30 Years of Hangeul Font Research / 12 Years of Handwriting Correction Instruction ✦ Possesses Clinical Data from Over 2,000 Cumulative Students ✦ Chief Director of Geulteo Handwriting Academy (Registered with Cheonan Office of Education No. 2046) ✦ Patent Registration for Handwriting Learning Method (No. 10-2678380) ✦ Patent Application for Poor Handwriting Correction System (No. 10-2023-0115703) ✦ Registered Proprietary Font Designs — Creation of Jeongbonche, Ippeumche, and YH Hangeuldaumche (No. 30-1297688) ✦ Currently Developing and Operating AI-Based Handwriting Correction Platform 'Hangeul Doctor AI' ✦ Appeared on SBS Biz's 'Masters' Series' ✦ Official Columnist for The Korea Lecturer Newspaper, Currently Serializing "Joo Young-hoon's Dignified Handwriting Correction" ✦ Author of *100% Handwriting Correction* Published ✦ 9 years of handwriting instruction at elementary and middle schools in Cheonan ✦ 10 years of teaching calligraphy and handwriting correction at community cultural centers ✦ Active on online lecture platforms ✦ Full member of the Cheonan Calligraphers Association / Held solo exhibitions ✦ This class is essential for children like this: ✦ Children who get scolded for their messy handwriting ✦ Children worried about their handwriting in dictation, diaries, or homework ✦ Children who try to write neatly but struggle ✦ Children whose confidence has dropped because of their handwriting ✦ Children who tried tracing workbooks but gave up quickly ✦ Changes after class They will realize for themselves why their handwriting is shaky. They will master everything at once, from how to hold a pencil to the structure of letters. After class, they will develop an eye to correct their handwriting on their own. Once they gain confidence in their handwriting, their attitude toward studying will also change. "Handwriting is not a skill of the fingertips, but a structure designed by the brain." With a system created through 30 years of research, we will transform your child's handwriting together. Countless Review Examples... Children's Handwriting Correction — Parent Testimonials "My child brought home a report and I paused for a moment... 'Is this handwriting or a code?'" My child brought home a report from their science academy, and I paused for a moment. No matter how much I turned on my "mom's hedgehog filter," the limit was simply thinking, "Oh, it was handwriting." It was difficult to decipher the school notices, and every time I saw the homework, I thought, "This can't go on like this." However, seeing a future where both of us would get high blood pressure if I taught them, I just spent time searching the internet. Then, on the recommendation of a mother from the same class, I started handwriting correction. Honestly, I was skeptical at first. But my child learned step-by-step, from the proper way to hold a pencil to consonants and vowels, words, and even continuous writing. One day, I thought, "Huh? I can actually read this?" "It changed so much that I was amazed. I also liked that the 1:1 lessons were tailored to my child's personality. Most of all, it was impressive to see my child become closer to poetry as we learned calligraphy using poems like Yi Yuk-sa's 'Green Grapes' and Yun Dong-ju's 'Counting the Stars at Night.' "Parents who sigh and get stressed every time they look at their child's handwriting, register right away!!" "I registered because I wanted to correct my 11-year-old child's handwriting this year. Whenever I saw my child write a diary, a school notice, or a book report, I couldn't read the content because of the messy handwriting, and stress would wash over me. The handwriting itself was a problem, but the stroke order of the consonants and vowels was also a mess, so I felt I needed to fix it. They taught us step-by-step from the beginning, from how to hold a pencil to the principles and background, and meticulously taught each individual consonant and vowel. I am truly satisfied with the results after 8 weeks. Now that the new semester of 4th grade has begun, my child has improved so much that they even received a star rating in their school notice for writing well. It feels like the heavy stone weighing on my heart because of their handwriting has disappeared." " "Seeing the correction made during the very first class, I realized that I myself had been unable to correct it." The class began this year through a referral from an acquaintance, specifically to correct the pencil grip of a fifth-grade elementary school girl. I had bought every pencil sharpener imaginable and tried everything from threats to persuasion to correct her, but nothing worked. However, after seeing the correction in the very first session, I realized, "Ah, I hadn't been able to correct it myself," and her mother and her older brother (a first-year middle school student) decided to take the class together. It was a time when we could correct various aspects of the child together through the lessons, ranging from her pencil grip to her posture while studying.
Experience & Activities
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Mechanical Engineering Major (Application of engineering design principles to the analysis of Hangul handwriting structure)
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Representative Director of Geulteo Calligraphy Academy (Cheonan Office of Education Registration No. 2046)
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30 years of Hangeul typeface research / 12 years of handwriting correction instruction / 2,000 cumulative students
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Patent Registration for Handwriting Learning Method and System (No. 10-2678380) Inventive Font Design Registration — Jeongbon Type (No. 30-1297688)
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Appeared on SBS Biz's 'Masters' Showcase' as a Hangul correction expert
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Official Columnist for The Korea Lecturer Newspaper: [Joo Young-hoon's Dignified Handwriting Correction] (25+ Episodes in Progress)
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Active on online lecture platforms, conducting numerous handwriting correction special lectures for companies, public institutions, and educational institutions.
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Regular Member of Cheonan Calligraphers Association / Hangeul Solo Exhibitions, Solo and Group Exhibitions
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Handwriting Correction and Calligraphy Classes at Cheonan Community Cultural Center (9th Year) 2018–Present
81 Parent Reviews

박**
10years old
2026. 10. 9 PM 4:55:10
[체험수업] [초3-4] 30분에 배우는 악필 탈출 첫 단추 · 황금 삼각 파지법
My third-grade child has terrible handwriting, so I tried various methods to improve it, but nothing worked. Just as I was about to give up, I stumbled upon Director Joo Young-hoon's class on social media. At first, my child adamantly refused to take the class, but upon hearing it was a one-day session, they agreed to give it a try. Once the class actually started, they seemed interested and concentrated intently; they were even surprised by their own improved handwriting and clapped their hands. A miracle happened in less than 40 minutes. My child, whose handwriting was so awful they couldn't even read their own, managed to write in letters that were recognizable not only to themselves but also to others. Thank you so much. I would like to try the regular classes as well. Thank you once again.
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정**
10years old
2026. 10. 9 PM 12:0:9
[체험수업] [초3-4] 30분에 배우는 악필 탈출 첫 단추 · 황금 삼각 파지법
It was an informative class perfectly suited for Hangeul Day! 😊 To celebrate Hangeul Day, I took the Kookeug handwriting correction class with my children. I had always wanted to help my children's handwriting improve, and I was glad to learn through this class what specific details to pay attention to when writing. Instead of simply copying letters, we examined the shapes of vowels and the balance of the characters, and learned how to write correctly step by step. The children also listened to the teacher's explanations and followed along intently. I particularly liked the process of looking at their own handwriting and correcting it themselves. While their handwriting won't completely change after just one class, I think it served as an opportunity to learn and practice how to write neatly. It was an even more meaningful time because we were able to appreciate the value of our written language on Hangeul Day and learn how to write properly. It was a satisfying class that made me glad I took it with my children! 😊
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김**
13years old
2026. 10. 8 PM 7:35:13
[초5-중1] 6주 글씨 원리 마스터 - 축 원리로 공책이 달라지는 명필 6강
[A Miracle in 6 Weeks] I Highly Recommend Teacher Joo Young-hoon's Handwriting Correction Class! I had tried many other classes to fix my terrible handwriting, but it always only improved briefly while I was actually taking the class. However, after 6 weeks of Teacher Joo Young-hoon's class, I see that my handwriting is maintaining its perfect form not only during class but also in everyday life! Since my child is in 6th grade, there is a lot of homework and little time for separate practice, yet their handwriting has become so beautiful that their school friends are amazed. During group activities, friends looked at my child's handwriting and envied them, saying, "You wrote really well," and I heard that the teacher was also very impressed by the improved style. While studying doesn't show immediate results no matter how much effort is put in, receiving recognition from others for handwriting in such a short period of time has visibly boosted my child's self-esteem. I strongly recommend Teacher Joo Young-hoon's class to parents who are worried about their children's bad handwriting. It was a class that was more than just an escape from bad handwriting; it was a gift of a lesson. It is all thanks to the teacher. Thank you so much!
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주영훈
2026. 10. 8 PM 8:29:17
Thank you so much for your heartfelt review~~^^ I am truly proud of my child for following along for six weeks without ever losing focus, despite the busy and heavy workload of 6th grade. Above all, this transformation is a result achieved entirely by the child themselves. Maintaining good handwriting not just during class but in everyday life is exactly what I had hoped for most. Because they internalized the structure and principles of the letters instead of just memorizing shapes through tracing, their handwriting doesn't fall apart even when practice time is limited. Now, as long as they maintain the habit of writing consistently, they will be able to write beautiful handwriting for the rest of their lives. I am also truly delighted to hear that the child's self-esteem has grown as they gained recognition from their friends and teacher. ^^ Your comment that it is "a gift beyond escaping bad handwriting" is a touching expression for me as well. I will continue to be with you until the end to ensure that proper handwriting becomes a valuable asset for your child. Thank you for trusting and entrusting us with this~~~
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