Complex sentence: The school is involved in the "Excellence in Cities initiative", and its motto used to be'Persuing Excellence...', until 2004 when it was changed to'Enabling Young People To Achieve Success'.
Split into simpler sentences: The school is involved in the "Excellence in Cities initiative". Its motto used to be'Persuing Excellence...', until 2004 when it was changed to'Enabling Young People To Achieve Success'.