The club won the championship of Polish Upper Silesia ("Silesian A-Class") in 1924, 1930 and 1936, and in 1937 advanced to the Polish first division where they became an immediate success. They finished as vice-champions and the team's Jerzy Wostal was the top scorer in the league with 12 goals. Wostal and teammate Leonard Piątek were among several players who played for the Polish national side in the 1930s. In 1939, AKS had as many as 10 football teams, including various youth teams, which was more than any other football organization of the Second Polish Republic.