Progress is measured by milestones. Goals can become a ritual or a fetish, but in the right measure they can give us some much needed reference points. P. S. Senior Secondary School has had a long and illustrious history of excellence. Here are a few milestones that can act as reference points in its journey so far and for the miles to be traversed:
- 1905P. S. Educational Society was founded in 1905 by Brahmasri Pennathur Subramania Iyer, who served as a solicitor, and also the commissioner for Mylapore from 1890 to 1901. On his passing, he bequeathed his entire properties to P.S. Charities, and founded P. S. Higher Secondary School on R.K. Mutt road, in the heart of Mylapore.
- 1976P. S. Senior Secondary School (CBSE) was established as a unit of the P. S. Educational Society. Shri. C. R. Pattabiraman served as the founder president, and Shri. P. C. Sekhar as the first correspondent of the school.
- 1982First batch of class XII students to pass out of the school.

- 1986The school was granted permanent affiliation status by CBSE.
- 1990Smt. K. Alamelu, the then Principal of the school was conferred the National Award to Teachers by Government of India and presented by the President of India. This was followed by Smt. Vijayalakshmi Srivatsan (2002) and Smt. Lakshmi Srinivasan (2013) receiving the same distinction.



- 1995-96Sumankar Shankar became the first student from the school to represent the country in International Olympiads, winning the silver medal at the International Olympiad in Mathematics held in Toronto, Canada. Since then many students from P. S. Senior have represented the country in international Olympiads in Mathematics, Physics, Chemistry, Biology, and Informatics Practices, and have won gold, silver and bronze medals.
- 1996G. Prasanna scored All India Rank 1 in the IIT Joint Entrance Examination.
- 2012P. S. Temple Green Vidyashram, a sister concern of P S Senior Secondary School, was launched in Oragadam.
- 2012-2015Installation of smart boards in all classrooms (from I to XII) to promote technology-enabled learning.
- 2013Dhruva Bhat was declared the 6th “Best ESL Speaker” at the World School Debating Council.
- Dhruva Bhat declared 6th bestBest ESL Speaker WSDC 2013

Sumankar Shankar 
G. Prasanna 
Dhruva Bhat - 2012-2015The school was conferred the International School Award by British Council.
- 2015The Digital Library was established.
- 2016State-of-the-art studio facility was launched to share teaching and learning resources with PS Temple Green Vidyashram, Oragadam and other schools.
- 2016A well- equipped Gymnasium was initiated at the school
- 2017Installation of solar panels
- 2018New RO Plant installed to cater to the needs of safe drinking water supply for the entire school.
- 2019At the CBSE National Football (Girls U-19) tournament held from Nov. 9 to 12, 2019 at Uttar Pradesh, the team from P. S. Senior Secondary School, Mylapore lifted the winners trophy by defeating Vatsalya International School, Gujarat.
- 2020H Viswas won the first place in Kala Utsav, a national level contest organized by MHRD in the music instrumental category for the year 2019 – 2020 was felicitated and given a cash prize of Rs.25,000 by the Chief Minister of Tamil Nadu.
- 2020Spoorthi Rao won the first prize in Kala Utsav contest2020 – 2021 under Carnatic music category.

CBSE Football Champions – Our victorious team with the trophy 
View of the Science Block of P S Senior Secondary School – first floor under construction 
Inauguration of RO Plant 
Gym being inaugurated at school 
At the Digital library 
Solar panels, a step towards a greener planet 
Studio 
International School award conferred by British Council 
Digital classrooms 
Kala Utsav - National level winner 