7 December - Awards and College Assembly, End of Year Mass, Students Finish for 2018
21 December - College Closes for 2018
17 January - College Office and Uniform Shop Open
26 January - Australia Day Public Holiday
30 January - Year 7, 11 and 12 Students Return for 2019
31 January - Year 8, 9 and 10 Students Return for 2019
6 February - Year 11 Parent/Student Information Forum
13 February - HSC High Acheivers Assembly
14 February - Year 12 Biology Excursion
18 February- NSW CCC Cricket Selections
21 February - College Swimming Carnival
22 February - Pupil Free Day
23 February - College Open Day
25  February - Year 10 HSC Minimum Standards Testing, NSW CCC Cricket Selections
26 February - NSW CCC Softball Selections
27 February - DIO Girls Touch Football
28 February - Year 7 Parent Night, NSW All Schools Triathlon (Individuals)
1 March - NSW All School Triathlon (Teams)
4 March - NSW CCC Tennis Selections
5 March - Shrove Tuesday, Senior School Parent Forum
6 March - Ash Wednesday Prayer Service
7 March - International Women's Day Breakfast, Year 10 Retreat
8 March - Year 10 Retreat, CSDA Public Speaking Round 1, Macarthur Max Potential Introducation Workshop
13 March - Year 7 Twilight Dance at St Gregory's 
14 March - DIO Swimming Carnival, DIO Tennis
15 March - CSDA Public Speaking Zone Final
16 March - Emerald Gala Dinner Dance
18 March - St Patrick's Day Celebration
21 March - Year 5 Workshops
22 March - CSDA Public Speaking Grand Final
25 March - NSW CCC Hockety Selections
29 March - DIO Touch Selections