1949 – IV TPD School created. Copernicus Secondary School has been its continuation.
1958 – Jan Dobrowolski becomes the headmaster of the school and continues until 1979
1960 – the school is given the name of Nicolaus Copernicus
1962 – bilingual instruction introduced (the first school in Poland)
1979 – Albert Stoma becomes the headmaster and continues until 2010
1990 – all classes are bilingually taught
1992 – the school is granted the IBO authorisation
1993 – the IB Diploma Programme introduced (one of the two first schools in Poland)
1994 – an innovative four-year secondary school programme introduced
1996 – IBO summer workshops for 400 IB teachers from Europe, Middle East and Africa organized
1999 – 50th school anniversary, graduates’ Reunion
2002 – an innovative organizational model in three-year secondary school introduced
2008 – Copernicus High School wins the second place in the Warsaw High School ratings
2009 – Copernicus High School gains the status of a fully bilingual secondary school (first high school in Poland)
2010 – Justyna Matejczyk becomes the headmistress of the school