St. John XXIII is a Catholic Primary school located in the northern suburbs of Melbourne providing a vibrant and comprehensive learning environment for children from Year Prep to Six. St. John XXIII Primary School was established in 1974 as a second school in the Parish of St Luke's Lalor. The school maintains a strong and valuable connection to the Parish guided by the mission of the Scalabrinian Fathers.

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St. John XXIII Primary School is situated on approximately 2 hectares of landscaped property in Thomastown East and boasts safe, extensive and contemporary learning spaces. The school consists of eleven spacious classrooms equipped with Interactive Whiteboards and multiple computers with intranet and internet access; a modern Library / Discovery Centre, a recently created Languages Other Than English (LOTE) room, a refurbished Visual Art room, administration and amenity facilities, Adventure Playgrounds, Basketball / Netball Courts and an expansive oval. Recent building developments have seen the construction of a multi-function Sports & Assembly Hall and new fences and gates surrounding the property.