Awards
- Singapore Quality Class
- People Developer award
- Sustained Achievement Award
- Best Practice Award
- Greenplan 2012 Award
- Innovator Award in Innergy Award 2005
- Sustained Lotus Achievement Award from the Singapore Environment Council.
- National Champions in The C Division Category for netball in 2007
- IT MAP Challenge 2007 2nd Secondary Schools Category
- Dunman NCC (Air) awarded with a Gold under the Best Unit Competition for eight consecutive years since 2002.
- Dunman Choir was awarded a Gold with Honours for the Singapore Youth Festival 2007 Choir Secondary School Category.
- Dunman Choir was awarded a Gold with a score of 92.8 over 100, in the Under-16 category of the International Festival of Advent and Christmas Music 2007 in Bratislava. This was second place for the category.
- Dunman Choir was awarded a Gold with Honours for the Singapore Youth Festival 2009 Choir Secondary School Category.
- Singapore Service Class
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