The pre-university course lasted only a decade and was phased-out in 1991 to accommodate the transformation of the school into one of the pioneer single-session secondary schools.

The school operated at two campuses up to 2003.
In 2004, First Toa Payoh Secondary School merged with Upper Serangoon Secondary School, and moved from its original site, Lorong 1 Toa Payoh, to new facilities at Toa Payoh East.
It was officially opened on 1 April 2005 by Dr. Ng Eng Hen, Member of Parliament for Bishan–Toa Payoh GRC, also the Minister for Manpower and Second Minister for Education.

First Toa Payoh Secondary School was merged with Bartley Secondary School in January 2016.
The pre-university course lasted only a decade and was phased-out in 1991 to accommodate the transformation of the school into one of the pioneer single-session secondary schools.
The school operated at two campuses up to 2003. In 2004, First Toa Payoh Secondary School merged with Upper Serangoon Secondary School, and moved from its original site, Lorong 1 Toa Payoh, to new facilities at Toa Payoh East. It was officially opened on 1 April 2005 by Dr. Ng Eng Hen, Member of Parliament for Bishan–Toa Payoh GRC, also the Minister for Manpower and Second Minister for Education.
First Toa Payoh Secondary School was merged with Bartley Secondary School in January 2016.
First Toa Payoh Secondary School