Term 4 Highlights
| Term 4 | Details |
|---|---|
| 5 October 2026 | Term 4 Commences |
| 6 October 2026 | 2027 Prefect Announcement |
| 6 October 2026 | House Art | Year 7 - Year 12 |
| 6 October 2026 | 2027 Year 9 Parent Information Evening |
| 6 October 2026 | PSPA Meeting | AGM |
| 7 October 2026 | OPGA Year 12 Luncheon |
| 8 October 2026 | Discovering Me | 2027 Kinder Parents Information Evening |
| 9 October 2026 | 2027 Prep Orientation Morning and Parent Information Evening |
| 12 October 2026 | 2027 Year 2 Parent Information Session |
| 12 October 2026 | Music Awards Evening |
| 13 October 2026 | VCE Art and Design Exhibition Opening |
| 13 October 2026 | Junior School Parent Information Evening |
| 14 October 2026 | Year 12 Valedictory Chapel Service |
| 14 October 2026 | Year 12 Boarders Valedictory Dinner |
| 15 October 2026 | Year 12 Gratitude Morning Tea |
| 16 October 2026 | Year 12 Valedictory Assembly |
| 17 October 2026 | OPGA 1 Year Reunion | Class of 2025 |
| 21 October 2026 | 4YO Kinder Grandparents Day |
| 21 October 2026 | Woodwind Studio Concert |
| 22 October 2026 | 2027 3YO Kinder Family Interviews |
| 22 October 2026 | Year 8 Student Led Conferences |
| 22 October 2026 | Prefect Investiture Assembly |
| 22 October 2026 | Band Showcase |
| 23 October 2026 | VCE Art and Design Exhibition |
| 24 October 2026 | OPGA 5 and 10 Year Reunion | Classes of 2021 and 2016 |
| 28 October 2026 | Brass Concert |
| 2 November 2026 | Mid-Term Break |
| 3 November 2026 | Melbourne Cup Holiday |
| 4 November 2026 | Staff Professional Development Day |
| 5 November 2026 | 2027 3YO Kinder Orientation Morning |
| 5 November 2026 | 2027 4YO Kinder Orientation Morning |
| 5 November 2026 | Open Twilight Evening |
| 10 November 2026 | PSPA Meeting |
| 11 November 2026 | Strings Concert |
| 12 November 2026 | PG Presents Concert |
| 19 November 2026 | Celebration Evening |
| 21 November 2026 | Year 12 Valedictory Dinner |
| 23 November 2026 | House Swimming | 2027 Year 10 - Year 12 |
| 23 November 2026 | House Swimming | 2027 Year 8 and Year 9 |
| 24 November 2026 | 2027 Year 8 - Year 12 Headstart Program |
| 25 November 2026 | Cadet Final Parade |
| 28 November 2026 | OPGA Hall of Fame |
| 1 December 2026 | Boarders Christmas Dinner |
| 2 December 2026 | 3KB Kinder Christmas Concert |
| 3 December 2026 | 4K Kinder Christmas Concert |
| 4 December 2026 | Year 6 Rite of Passage |
| 4 December 2026 | 3KA Kinder Concert |
| 4 December 2026 | Peninsula Grammar Christmas Event |
| 7 December 2026 | Connect27 Day |
| 7 December 2026 | ECC Christmas Chapel Service |
| 8 December 2026 | End of Term 4 |
| 10 December 2026 | VCE Results Day |