After studies at the Warsaw Theological Academy (now: Cardinal Stefan Wyszyński University in Warsaw he earned at May 15, 1995 the Licentiate, at June 8, 1998 the Doctorate and in 2005 the Habilitation with his book: "Katecheza o małżeństwie i rodzinie w Polsce po Soborze Watykańskim II." (Religious education in the Families in Poland after the Second Vatican Council) at the Pontifical University of John Paul II.
In 1988 Włodzimierz Siedlik formed the Psalmodia Choir at the Liturgy Institute, and this was officially recognised as the choir of the Academy in 1996.
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