[1] Li Sun High shared premises with Ming Sin Primary School and was home to 150 students.

Before 2002, PHS occupied a small plot of land located across the road from the Yio Chu Kang MRT station, and shared a field with the neighbouring Li Hua Primary School and Ang Mo Kio North Primary School, even though PHS herself shared no affiliations with either of these.

The new school includes a hall that can accommodate the entire school population, well-equipped computer laboratories and IT-enabled classrooms, an Indoor Sports Stadium consisting of three levels of facilities such as a basketball court, a volleyball court and various rooms for co-curricular activities (CCAs) for students studying the subject, as well as the National Education Stairwell and the Olive Garden.

The dove with a stalk of olive leaves depicts the development of the spiritual and moral life in the School and guides us in our education which is represented by the Book.

[5] PHS is designed to appeal to parents wishing their sons and daughters to benefit from a tightly structured and very strict school setting in the service of God.

The rules for discipline and the code of conduct lay down rigorous behavioural standards, noting that truancy, vandalism, smoking and other serious offences are severely punished.