Korean 15-year-olds' reading ability dropped significantly over the last three years, an OECD report showed Tuesday, likely partly due to the increased use of digital and social media. According to the Organization for Economic Cooperation and Development's Programme for International Student Assessment 2025, the cohort's average reading score was 501, down 14 points from the previous assessment in 2022. The latest assessment was conducted over three years involving approximately 760,000 students in 91 countries, including 38 OECD member states. It aims to assess and compare 15-year-olds' skills in reading, mathematics and science across countries, and has been carried out every three years, though the next editions will be released every four years. In Korea, the latest assessment was conducted on 6,859 students at 196 schools. The reading score ranked the country third to 13th, compared with second to 12th in 2022. The report assigns ranking ranges to each country instead of a single rank in consideration of the margin of error. "It is difficult to identify a single cause for lower readi