From 1947 to 1953 Szlaga attended elementary school in Gdynia and then went attended Collegium Leoninum in Wejherowo and Collegium Marianum in Pelplin.
Bach-Collegium Stuttgart | Silybum marianum | Collegium Nobilium | Collegium Vocale Köln | Collegium Musicum | Collegium Regium Stockholmense | Collegium Nobilium (Warsaw) | Collegium Marianum | Collegium Hungaricum | Collegium Germanicum et Hungaricum |