Hanoi, Dec. 6 -- Vietnam has missed out in the ranking of Programme for International Student Assessment (PISA) 2018 despite getting high scores.

According to the Ministry of Education and Training, the country scores 505 points (ranking 13th) in the reading test, 496 (ranking 24th) in maths, and 543 (ranking 4th) in science.

PISA 2018 measures 15-year-olds' ability to use their reading, mathematics and science knowledge and skills to meet real-life challenges in 79 participating countries and economies.

The news has left many people raising their eyebrows while Vietnam was already among top 20 countries that had students gaining the best achievements under the PISA 2017's ranking, which usually see the names of highly developed nation...