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주영훈

주영훈

Reviews

39

Rating

5.0

"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

On Gguge,64 classes
have been taught.
🗓️
The teacher has been with Gguge sinceJun 08, 2026
and counting.

39 Parent Reviews

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장***

12years old

2026. 6. 30 PM 11:11:7

아이 악필, 혼내지 마세요, 원리만 알면 명필이 됩니다[학교,학원에서는 배우지못했던 강의 초1~초6대상]

My left-handed child, who dislikes writing and has terrible handwriting, really enjoyed the class. Watching the class videos, I was impressed by how passionately you taught. However, I am concerned about whether it is possible to switch to right-handedness at this stage. Since my child is in the upper grades, there isn't enough time for every class. It seems they are still writing with their left hand because it feels more familiar. You mentioned that it could be done in two months, so I think it would be great if a short schedule of five classes a week could be arranged for that duration. I believe doing a little bit every day will lead to faster improvement than a one-off session. Classes before school, very late at night, or even morning sessions as a special vacation course would be good options.

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주영훈

2026. 7. 2 PM 8:8:53

Hello, Mother. Thank you for your valuable feedback. It gives me strength to hear that you felt my passion. The transition from left-hand to right-hand is not about hand strength, but a process where the brain learns a new structure. Therefore, repeating the process daily, even for short periods, is much more effective. In fact, data from over 2,000 correction cases has confirmed that a stable transition occurs within two months when the principles are consistently repeated. We are also preparing a short-term program five times a week—in the form of classes before school, late at night, or during vacation mornings—in the same direction as what you mentioned. We will incorporate your valuable feedback and provide further details soon. If you start now, I can definitely show you improved handwriting in two months. Thank you for your valuable feedback. Sincerely, Joo Young-hoon, Geulteo

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감***

14years old

2026. 7. 29 PM 10:22:1

학교에서는 못배우는 '노트필기 방법' - 자세, 각도, 축의 변화가 명필을 만든다 -

I used to think that writing beautifully required only innate talent or repetitive practice. However, through this class, I learned that there are specific principles governing handwriting, such as posture, the position and angle of the pencil, and the axis of the letters. The instructor's explanations were easy to understand, and by following along, I was able to identify my own bad habits. Although it was a short time, I felt my handwriting becoming a bit more stable, and I want to continue practicing the methods I learned to take another step closer to becoming a master calligrapher. It was a beneficial and satisfying class.

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주영훈

2026. 7. 30 AM 10:17:28

Hello, Parents! Thank you so much for your warm feedback. What your child realized through this class is truly important. Many people think of handwriting as an "innate talent," but in reality, anyone can write beautifully if they understand the correct principles and posture. The change has already begun simply by understanding the "structure"—such as posture, pencil angle, and the principles of the axis. The fact that their handwriting has already become stable in such a short time is proof of this. Furthermore, I believe that if we continue the lessons while maintaining consistent conversation, your child's thinking and understanding will expand much further. From now on, consistent review at home is crucial. The more you repeat the methods you have learned, the more naturally your hand will adapt, bringing you one step closer to becoming a master calligrapher. I look forward to seeing your child in the upcoming multi-session classes~~^^ I sincerely support your child's growth! We will continue to be with you.

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11years old

2026. 7. 23 PM 6:31:8

아이 악필, 혼내지 마세요, 원리만 알면 명필이 됩니다[학교,학원에서는 배우지못했던 강의 초1~초6대상]

Hello~ I am the guardian of a 4th-grade student who is taking this class for the first time. My child was very nervous since it was the first lesson, but you really helped put them at ease, so they answered more questions than in other classes. You used tools and explained things in a way that was appropriate for my child's age. You were so passionate; I watched the class from the side and was very satisfied! Also, the teacher personally wrote for us. The teacher's handwriting was quite impressive. I heard that they have spent 12 years researching how to write well... My child says the class is even more fun because they are taking it together.

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주영훈

2026. 7. 24 PM 6:35:9

Thank you for the warm review! 😊 I was so happy reading it. It is especially heartwarming to see that the child expressed their thoughts so much during the class. There is one thing I have realized while studying handwriting for 12 years... that anyone can improve their handwriting if they just understand the principles, and that it really changes when mom and dad cheer them on together. Just the fact that you are watching over them from the side will be a great source of strength for the child. If the child takes the next multi-session class, they will feel the difference letter by letter as they apply the principles they learned; I think it would be even more meaningful to witness that process together with their mom. We will continue to work together to help create change in the child. Thank you~~

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