Complex sentence: It opened its doors for the first day of school in August 2007 and by fall of that year, its students and faculty had celebrated the first Opening Liturgy at St. Nicholas Church and the first Junior Ring Ceremony.
Split into simpler sentences: It opened its doors for the first day of school in August 2007. By fall of that year, its students and faculty had celebrated the first Opening Liturgy at St. Nicholas Church and the first Junior Ring Ceremony.