Complex sentence: He attended Waitaki Boys' High School from 1930 to 1933, before moving to Christchurch to study journalism and music at Canterbury University College (then part of the University of New Zealand) (1934--36).
Split into simpler sentences: He attended Waitaki Boys' High School from 1930 to 1933. He then moved to Christchurch to study journalism and music at Canterbury University College (then part of the University of New Zealand) (1934--36).