During the Nazi occupation of Poland, the Germans made an office building of the school and destroyed the book collection.

A student of Sobieski High School, Przemysław Mazur, was awarded a gold medal at the International Mathematical Olympiad in 2006,[2] 2007[3] and 2008.

Since 2009 it's also a part of international network of schools teaching German language Schulen: Partner der Zukunft (en.

Sobieski High School officially opened a new athletic center with sports hall, two-level gym and fitness room in September 2008.

The semi-biographical movie Mała matura 1947 by Janusz Majewski released in 2010 tells a story of a young boy, Ludwik, who moved along with his family from Lviv to Kraków and attended Sobieski High School.