Yusof Ishak Secondary School (YISS) is a co-educational government secondary school located in Punggol, Singapore. The school is named after Yusof Ishak, the first President of Singapore.
The school was started under the name Jubilee Integrated Secondary School in 1965, with 984 pupils in two streams, English and Malay. It was officially opened as Yusof Ishak Secondary School at Jubilee Road on 29 July 1966, named after the first President of Singapore, Yusof Ishak. The school moved to Bukit Batok in December 1998 and inaugurated on 29 July 2000 by Ong Chit Chung, Member of Parliament for Bukit Timah GRC.
YISS was the first school to top the value-added ranking in both Express and Normal Streams. In 2010, it was evaluated as value-added, and its National Cadet Corps (Land) Girls unit received the Best Unit award.
In 2018, in response to declining student numbers at Bukit Batok and rising demand in Punggol, the school announced its relocation to Punggol. To minimize disruption to students, MOE stopped admitting new Secondary 1 cohorts to the current Bukit Batok campus in 2019 and 2020.
The school began receiving new students at its relocated Punggol campus from 2022.
Students wear a white shirt with the school badge worn on the left collar, coupled with dark blue shorts (for male lower secondary students), pants (for male upper secondary students), or skorts (for females). The school tie is worn on formal school functions.
The six values of YISS are Integrity, Self Respect, Purpose, Inquisitiveness, Resilience and Empathy (InSPIRE).
The school motto is Ilmu Suluh Hidup, which means "knowledge is the light of life" in Malay.
As part of MOE's LEAPS2.0 program, students are required to take part in a co-curricular activity. The CCAs in Yusof Ishak Secondary School can be divided into categories:
Uniformed Groups
Visual and Performing Arts
Physical Sports
The canteen currently consists of 6 open stalls with 3 being dedicated to SATS food. The other stalls consist of a drink and snacks store, Malay noodle stall and another snack stall in partnership with the Society for Physically Disabled (SPD).