Further information is available in the School Calendar on the Parent Lounge or School App.
| Date | Event |
|---|---|
| 28 January | First Day of School for Year K, 7, 11 and 12 |
| 28 January | Kindergarten and Year 7 parent Information sessions and morning tea |
| 28 January | New students to SCAS meet Primary teachers and Secondary Year patrons at 2pm |
| 29 January | First Day for all other Year levels |
| 7 February | Photos for new students and Kindergarten students |
| 7 February | Kindergarten to Year 2 Twilight Cocktail Evening |
| 11 February | Primary Meet the Teacher Evening |
| 14 February | Primary School Swimming Carnival |
| 19 February | Kindergarten Parent/Teacher Interviews |
| 21 February | Years 3 to 6 Twilight Cocktail Evening |
| 25 February | Year 7 2020 Meet the Teacher and Cocktail Evening |
| 28 February | Secondary School Swimming Carnival |
| 5 March | Primary School HRIS Swimming |
| 9-11 March | Years 3, 4 and 5 Camp Week |
| 9-11 March | Year 6 Leadership Week |
| 10 March | Year 11 and 12 Parent Teacher Interviews |
| 12 March | Secondary School HRIS Swimming |
| 17 March | Secondary School Cross Country Carnival |
| 20 March | National Day of Action Against Bullying and Innes House Fundraiser |
| 23-26 March | Primary School Parent/Teacher Interviews |
| 27 March | Primary School Cross Country Carnival |
| 30 March-3 April | Year 10 Work Experience |
| 31 March-3 April | Years 7, 8, 9 and 11 Camp Week |
| 31 March-3 April | Year 12 Half Yearly Exams |
| 3 April | Primary Grandparents and VIP Day |
| 8 April | Primary Easter Hat Parade |
| 1 May | Primary HRIS Cross Country |
| 1 May | Secondary HRIS Cross Country |
| 5 May | Years 7 and 8 Da Vinci Decathlon |
| 6 May | Years 9 and 10 Da Vinci Decathlon |
| 6 May | Mother’s Day Breakfast |
| 7 May | Years 5 and 6 Da Vinci Decathlon |
| 8 May | Years 3 to 6 Primary Disco |
| 8 May | Kindergarten to Year 2 Infants Disco |
| 12 May | Year 7 2021 Information Evening |
| 12-14 May | Naplan for Years 3, 5, 7 and 9 |
| 14 and 19 May | Years 7 to 10 Parent/Teacher Interviews |
| 18 May | Primary School Athletics Carnival |
| 18-22 May | Wellness Week |
| 21 May | Farrell House Fundraiser |
| 22 May | Secondary School Athletics Carnival |
| 25-29 May | Year 6 Camp to Canberra |
| 26 May | Year 11 2021 Subject Selection and Information Evening |
| 3-4 June | Dance Showcase at The Glasshouse |
| 10-11 June | Instrumental Showcase |
| 17-18 June | Vocal Showcase |
| 19 June | Primary HRIS Public Speaking |
| 26 June | Columba Day |
| 23 July | NAIDOC Day Celebrations |
| 28 July | Year 9 2021 Information Evening |
| 28 July | Secondary HRIS Athletics |
| 30 July-11 August | Year 12 Trial Exams |
| 3-6 August | Primary School Parent/Teacher Interviews |
| 4-5 August | HRIS Cultural Festival |
| 13 August | Secondary School Photo Day |
| 13 August | Primary HRIS Athletics |
| 16-20 August | HICES Music Camp |
| 17-21 August | Science Week |
| 18 August | Years 11 & 12 Parent Teacher Interviews |
| 20 August | McCabe House Fundraiser |
| 25 August | Years 7 to 10 Parent Teacher Interviews |
| 26 August | Father’s Day Breakfast |
| 4 September | Stage 1 Athletics Carnival |
| 16-25 September | Year 11 Yearly Exams |
| 20-22 September | Year 12 Retreat |
| 21-22 September | Year 10 Australian Business Week and Year 9 Environmental Awareness Week |
| 22-25 September | Years 6, 7 and 8 Integrated Unit |
| 23 September | Year 12 2020 Valedictory Dinner |
| 24 September | Year 12 2020 Thanksgiving Service, Graduation and Morning Tea |
| 13 October | Kindergarten 2021 Information Session |
| 15 October-6 November | HSC Examinations |
| 4 November | Year 3 String Soiree |
| 4-11 November | Years 7 to 10 Yearly Exams |
| 11 November | Year 12 2021 Induction and Commissioning Service and Breakfast |
| 12 November | Year 5 Band Soiree |
| 13-14 November | Year 2 Sleepover |
| 16 November | Year 7 2021 Orientation Day |
| 16 November | Primary Step Up Day, New Students Orientation and New Parent Supper |
| 25 November | Nine Lessons and Carols |
| 26 November | Year 10 Retreat |
| 27 November | Year 10 Celebration Dinner |
| 30 November | Year 6 Graduation and Disco |
| 1 December | Robinson House Fundraiser |
| 1 December | Carols in the Amphitheatre |
| 3 December | Primary and Secondary Sports Awards |
| 4 December | Kindy Christmas Play and Awards |
| 4 December | Stage 1 Celebration of Learning |
| 4 December | Years 3 to 6 Primary Awards |
| 7 December | Secondary School - Stage Awards in the Iona Theatre |
| 9 December | Secondary School - Stage Awards in the Iona Theatre |
| 9 December | Secondary School Gala Awards at the Glasshouse |