QTSS was one of the 28 schools selected by the Ministry of Education to start piloting aspects of Full Subject-Based Banding (Full SBB) from 2020 onwards due to its ability to help students fulfil their potential.

From December 1993 to June 1997, it occupied temporary premises while the buildings at Strathmore Road were renovated and upgraded.

The sky blue reflects the limitless opportunities to strive for and the maroon signifies the spirit of fraternity.

On the tower, which denotes strength, is the lion which signifies courage and from which Singapore derives its name.

Below the shield is the school motto "Berani Berkhidmat", which means "Dare To Serve" in Malay.