Woongjin ThinkBig Launches Customized Reading Solution 'KRS' for Preschool and Elementary Students

Personalized Book Recommendations Through Triple Diagnosis of Reading Skills, Temperament, and Preferences

Woongjin ThinkBig announced on August 26, 2026 that it will launch "KRS (Korea Reading System)", a customized reading growth solution designed to support and enhance reading activities for preschool and elementary students by analyzing their reading abilities, temperament, and preferences.

The core feature of KRS is its "triple-layered diagnostic system," which comprehensively analyzes reading skills, temperament, and preferences. Reading skills are assessed based on vocabulary difficulty, sentence structure, background knowledge, and cognitive tool words to determine the student’s current reading abilities. Temperament is evaluated by analyzing the psychological traits and attitudes displayed while reading. Preferences are identified by examining the topics and elements that interest the child, allowing the solution to recommend the most suitable books.

Logo of the customized reading growth solution for preschool and elementary students, 'KRS (Korea Reading System)'. Woongjin ThinkBig

Based on the diagnostic results, students are assigned a reading level from 1 to 12 according to their ability and begin their reading journey at a stage appropriate to their skills. They are also categorized into one of eight personas, such as "intuitive doer," tailored to their temperament, and receive coaching based on their type. Personalized book recommendations are provided in line with their preferences. Parents can gain a comprehensive overview of their child’s reading tendencies, level progression, reading activity scores, and learning history through detailed reports, enabling them to track their child’s developmental progress at a glance.

The KRS reading levels are designed using extensive reading data accumulated by Woongjin ThinkBig through more than ten years of digital book service operations and a database of over 820,000 Korean vocabulary words. For measuring book difficulty, the company employed a jointly developed model with Professor Hansem Kim of Yonsei University’s Interdisciplinary Program in Linguistic Informatics. This model conducts a thorough analysis of book complexity using 47 indicators, including vocabulary difficulty, sentence structure, and semantic similarity, and is used to recommend books that match each child's current reading level.

Woongjin ThinkBig will unveil KRS for the first time on its website in September and launch a free KRS diagnostic campaign.

Seunghyun Yoon, CEO of Woongjin ThinkBig, stated, "Based on Woongjin ThinkBig’s 46 years of experience dedicated to children’s books and education, we will establish KRS as the new standard for fostering reading growth among children in Korea."

This content was produced with the assistance of AI translation services.