This is a list of future 2021 Calendar events. It does get added to over the year as further activities are confirmed.
| Assembly | Fri, 18 Jun |
| Trivia Night | Fri, 18 Jun |
| BOT Meeting | Mon, 21 Jun |
| Whole School Photo | Fri, 25 Jun |
| Kiri Team - Road Safety | Mon, 28 Jun - Tue, 29 Jun |
| Eastern Zones - Hockey | Mon, 28 Jun |
| Toi Wearable Arts Showcase | Tue, 29 Jun |
| Assembly | Thu, 1 Jul |
| Kiri Team - Road Safety | Thu, 1 Jul |
| Reports Home | Fri, 2 Jul |
| PTA Meeting | Mon, 5 Jul |
| Learning Conversations - students finish 1pm | Wed, 7 Jul |
| Bay Suburbs - Netball | Wed, 7 Jul |
| Learning Conversations - start 3.30pm | Thu, 8 Jul |
| Eastern Zones - Netball | Thu, 5 Aug |
| School Cross Country | Fri, 6 Aug |
| Cross Country - Rain Day | Mon, 9 Aug |
| Band Showcase evening | Tue, 10 Aug |
| BOT Meeting | Mon, 16 Aug |
| Snell STEAM Fair | Mon, 16 Aug |
| Bay Suburbs - Cross Country | Mon, 23 Aug |
| Eastern Zones - Cross Country | Mon, 23 Aug |
| Blokes Breakfast | Fri, 27 Aug |
| Working Bee | Sun, 29 Aug |
| Eastern Zones - Girls Basketball | Mon, 30 Aug |
| Kings Honours Band Festival | Thu, 2 Sep - Fri, 3 Sep |
| Eastern Zones - Boys Basketball | Fri, 3 Sep |
| Anchor AIMS Games | Sat, 4 Sep - Fri, 10 Sep |
| PTA Meeting | Mon, 6 Sep |
| Centennial School Celebrations | Fri, 10 Sep |
| Centennial Gala Dinner | Sat, 11 Sep |
| Centennial School Community Celebration and Open Day | Sat, 11 Sep |
| Art Gallery Open Day | Sat, 11 Sep |
| Bay Suburbs - Girls Basketball | Tue, 14 Sep |
| Bay Suburbs - Boys Basketball | Thu, 16 Sep |
| BOT Meeting | Mon, 20 Sep |
| Bay Suburbs - Hockey | Thu, 30 Sep |
| Calendar Art | Mon, 18 Oct - Fri, 22 Oct |
| BOT Meeting | Mon, 18 Oct |
| Kiri Swimming Lessons | Mon, 18 Oct - Fri, 22 Oct |
| Kiri Swimming Lessons | Wed, 27 Oct - Fri, 29 Oct |
| Yr4 Sleepover | Thu, 28 Oct |
| Year 5 Camp | Mon, 1 Nov - Tue, 2 Nov |
| Year 4 Sleepover | Mon, 1 Nov |
| PTA Meeting | Mon, 1 Nov |
| Celebrating the Arts evening | Wed, 3 Nov |
| Eastern Zones - Touch Rugby | Tue, 9 Nov |
| BOT Meeting | Mon, 15 Nov |
| Bay Suburbs - Touch | Tue, 16 Nov |
| Jolly Holly Kohi Xmas Family Picnic | Sun, 21 Nov |
| Year 7/8 Camp | Mon, 22 Nov - Fri, 26 Nov |
| Bay Suburbs - Athletics | Mon, 22 Nov |
| Student Leader Thank You Day | Fri, 3 Dec |
| BOT Meeting | Mon, 13 Dec |
| Reports go Home | Wed, 15 Dec |
| Year 6 Camp | Tue, 17 May - Fri, 20 May |