I am Sudhir Sahasranaman and along with my co-founder, Tejaswini Uma Sudhir, I help students unlock their full potential through top quality explanation videos, test papers and books.

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The Elevator Notes

ICSE Class 10 · English

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Class 9 English Literature

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Latest Packages

Current package

ICSE 10 Physics 200 MCQ Bank 2027 (All chapters to be done by August)

ICSE Class 10 · Physics · Valid till 14 Mar 2027

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Current package

ICSE 10 Chemistry 300 MCQ Bank 2027 (All chapters to be done by August)

ICSE Class 10 · Chemistry · Valid till 15 Mar 2027

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More active packages are available inside the full packages section.

Numbers Speak

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Years of creating All-India Toppers

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Course Rating (out of 5)

The Best English Grammar Book for ICSE & ISC students by Sudhir Sir

Now Available : Grammatically Yours: The Best English Grammar Book for ICSE & ISC Exams by Sudhir Sir

Explains grammar rules simply with examples, ensuring application over rote learning. Tailor-made for ICSE & ISC Classes 9–12, with practice tests in the exact exam format.

Now Available : 60 English Essays for ISC with Sudhir Sir

This book of 60 essays for Class 11 and 12 students authored by Sudhir Sir is a must-have for every ISC student, teacher and library. It is a detailed guide on how to approach essays, the kind of content and writing style. The 2025 CUET exam paper used an essay as Reading Comprehension passage - testimony to the quality and popularity of the book. All the sample essays are written in lucid language and will help students achieve success in exams.

Now Available : Write English Right

This book of 100 compositions, letters, notices and e-mails is for students of ICSE classes 9 and 10. The book to be released in the first half of July 2025 will explain how to write quality essays, letters, notices and e-mails; how to avoid common mistakes and how to score big in the English Language examination. This book is also a must buy because four topics in the 2025 Board exam were part of the earlier edition of our Book of Essays and Letters.

What People Are Saying

"Hi Sir, My son got 96.4 percentage. Thank you so much for all your videos and advice, that had helped him a lot. May God bless you."

— Riya Jomon

"Thank you so much sir. ISC English learning with SWS was so much loving. Scored 97 in English just because of you sir. Been your diligent student from ICSE. Thank you so much once again for your guidance and invaluable support. "

— Mimi

"Sir My daughter got 99 marks in English 12th ISC. Your efforts and Blessings. Thank you So much."

— Anjali Thakur

"Got 97 in English Literature Sir. Thank you so much for everything Sir."

— Margana Srijha

"Sir I am from Kerala and I acquired 96% in literature it was just because of your classes that actually helped me to score the above. Thank you sir for uploading such productive classes. I can't express my gratitude by my words Thank you so much sir. Attending your fruitful classes was literally a blessing and the best decision in my tenth journey."

— Jisha Mathew

"Sir got 95 in English in 12th just because of you. Thank you from the bottom of my heart. I am following you since class 10 and I am so proud to call myself your student."

— Kavita Pandey

"Sir, all i want to say is thank you, all the videos you have made for us, explaining line by line, thank you soooo much."

— Sankalp Bharadwaj

"Dear Sudhir Sir, I do not know how to thank you for the help you have provided me with. I usually watch your history and geography videos, but these English videos helped me a lot more than I thought. I hope that I have done well in the examination. I absolutely admire the manner in which you teach. Once again, thank you, sir. I am immensely grateful and really love your videos. - V Aniruddhan, Class X, the school KFI, Chennai."

— Aniruddhan V

"Hello Sir, I just wanted to thank you sincerely for all your guidance in English Literature and Language over the past years. Your videos and explanations helped me understand the subject clearly and gave me a lot of confidence for my exams. I am truly grateful to you. Thank you so much, Sir."

— Tanu Bhowmick

"You didn't just teach me a subject; you taught me how to be a more thoughtful and respectful person. You make learning fun and exciting every day. I'm so lucky to be in your class! Thank you so much Sir. gonna miss ur Namaskar Vanakkam with all my heart sir."

— Khushi Shukla

Latest Blog Posts

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Should I take the IPMAT?	A much-sought after course these days is the ...	Read
What are my options to NEET?	When we were kids, the only f...	Read
How to answer MCQs in English Literature	Many MCQs will not be straig...	Read

See All

Students' and Teachers' Interviews

How to study ISC Class 12 Accounts

If you have been promoted to Class 12 and will take the Board Exam in 2026, what should be your study approach to Commerce, Accounts and Economics in the ISC Board. SWS spoke Kavita Ravindranath, Senior faculty in Loyola School, Jamshedpur. SWS : The academic year has just begun and let's talk about Class 12 students. With the template of the exams gradually changing to Competency-focused questions, how challenging have the Commerce subjects become for ISC students? Kavita : No doubt the shift is demanding. But that's how a subject is to be mastered. To have a sound understanding of...

Read

How to study Chemistry in ICSE Class 10

If you have just been promoted to Class 10, what should be your study approach to Chemistry. SWS spoke Vijaykumar Prabhakaran Sir, senior Chemistry faculty based in Chennai. He is also the author of a book on Chemistry for ICSE students.      SWS : The ICSE academic year has just begun and it is summer vacation time for most students. How do you suggest students should use this time to study Chemistry in the holidays?   Vijaykumar Sir :  I will speak as a parent first, summer vacation is the time for everyone to relax, rejuvenate and then restart....

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How to study Geography in ICSE Class 10

If you have just been promoted to Class 10, what should be your study approach to Geography. SWS spoke Rameshwer Verma Sir, senior faculty and Board examiner. SWS : The ICSE academic year has just begun and it is summer vacation time for most students. How do you suggest students should use this time to study Geography in the holidays? Verma Sir : Start familiarizing yourself with the basic political map of India (states, capitals, major cities) and the physical map (major mountains, plateaus, rivers). Watch documentaries on natural phenomena, climate zones, and Indian regions. Explore educational YouTube channels that...

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How to study Physics in ICSE Class 10

If you have just been promoted to Class 10, what should be your study approach to Physics. SWS spoke Satish Rao Sir, Head of Department of Physics at the Kerala Public School in Jamshedpur, with a teaching experience of over 15 years. SWS : The ICSE academic year has just begun and it is summer vacation time for most students. How do you suggest students should use this time to study Physics in the holidays? Satish Sir : Studying Physics is not what I advise Students. I tell the students to understand Physics, see physics in whatever you are seeing...

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Our Faculty

Since 2019-20, when we taught our first batch of students, our students have been consistently the AIR 1, 2, 3, 4, 5, 6 in ICSE 2020, 2022, 2023, 2024, 2025. Add to that several school, city, district, state toppers, making their parents, grandparents, siblings and teachers proud.

What makes SWS different from any other platform?

Our explanation videos are not summary videos with shortcuts.
Each concept and chapter is explained in detail.
Many teachers admit watching SWS videos before teaching the same lesson in class.
From 2021 to 2025, every student's doubt was addressed — often better than in school.
Parent and student testimonials show the deep impact on academic success.
Our Test Papers often predict actual board questions and teach ideal answer formats.
They are higher quality than other market resources and are freshly created each year.

Tejaswini Uma Sudhir

MBA (PGDM-BM), XLRI Jamshedpur (2025–27)

99.9 percentile in XAT 2025

B.Tech (CSE), Shiv Nadar University

97.6% in Class 12

97.2% in Class 10

Sudhir Sahasranaman

Chevening Scholar, Cardiff University, UK

All-India Topper – IIMC Entrance

M.A English Literature & Political Science, DU

Author – Saina Nehwal Biography, ISC/ICSE books

Channel Founders

Tejaswini Uma Sudhir & Sudhir Sahasranaman

📩 For Collabs:

rollnumber2601@gmail.com

Your Digital Classroom

Start with Free Notes and Current Packages

Free Notes

The Elevator Notes

Class 9 English Literature

Latest Packages

ICSE 10 Physics 200 MCQ Bank 2027 (All chapters to be done by August)

ICSE 10 Chemistry 300 MCQ Bank 2027 (All chapters to be done by August)

Numbers Speak

Now Available : Grammatically Yours: The Best English Grammar Book for ICSE & ISC Exams by Sudhir Sir

Now Available : 60 English Essays for ISC with Sudhir Sir

Now Available : Write English Right

What People Are Saying

— Riya Jomon

— Mimi

— Anjali Thakur

— Margana Srijha

— Jisha Mathew

— Kavita Pandey

— Sankalp Bharadwaj

— Aniruddhan V

— Tanu Bhowmick

— Khushi Shukla

Latest Blog Posts

A much-sought after course these days is the ...

When we were kids, the only f...

Students' and Teachers' Interviews

How to study ISC Class 12 Accounts

How to study Chemistry in ICSE Class 10

How to study Geography in ICSE Class 10

How to study Physics in ICSE Class 10

Our Faculty

Tejaswini Uma Sudhir

Sudhir Sahasranaman

Channel Founders