Her first medal - bronze, with Poland women's national volleyball team, she achieved at World Championship 1956 in France. Then she won bronze of European Championship 1958 held in Czechoslovakia. In 1962 she won bronze medal of World Championship, and one year later silver of European Championship 1963. In 1964 she took part in Olympic Games Tokyo 1964. She played in all five matches and Poland, including Kordaczuk, won bronze medal in the Olympic tournament. Kordaczuk was considered as one of the best setters in the world and she played on the national team 164 times.