Developed and launched self-brand ‘BiBoBoo English' (Alphabet, Phonics, and Readers course) for the primary English Education (2022)

Developed a vocabulary book for elementary school student and for junior prep. 

Developed student book, storybook, and workbook for alphabet learning

Developed student book, storybook, and workbook for alphabet learning

Developed two phonics student books and two workbooks

Developed six storybooks and six workbooks for young learners

Developed four English conversation series books

Developed two TOEIC prep books and two actual test books.

Developed 256 chomokdal storybooks and 72 workbooks

Content Development of English Class scenario and content for KT, Inc. School IPTV Trial Service (2009)

Developed the 3rd-4th Grade English multi-content program based on the textbooks and distributed the application guide for EBSe (2018-2019)

Managed 2014 Elementary and Middle school TEE training for Chungcheongbuk-do, Gyeongsangbuk-do and Jeollabuk-do Office of Education (2013)

Teacher Training for Elementary School Teachers, Gyeonggi-do Institute for Foreign Language Education (2013)

Seoul Education Training Institute, Elementary School Teachers Training (2012)

Jeollabuk-do Office of Education, 2012 Elementary and Middle School TEE Expert Training(2012)

Teacher Training for Incheon English Village English native speakers (2006)