The 2019 IOAA was held in Hungary from August 2 to 10, 2019. It drew 254 students from 46 countries and territories in different continents.

The Vietnam team included eight students from the Hanoi-Amsterdam High School for the Gifted in Hanoi.

The competition comprised of four competitions, including Theoretical, Data Analysis, Observational and Team Competitions.

IOAA is an annual event for highly performed high school students from all around the world. The first IOAA was held in the city of Chiang Mai, Thailand in November, 2007.

At the 2016 IOAA in India, Vietnamese students won one silver and four consolation prizes.