Mumbai, India:
In a world where grammar classes often put students to sleep, one Indian educator turned English grammar into a global headline. Sanjay Kumar Sinha, Mumbai-based grammar expert, author, and long-time academic mentor, is widely celebrated as тАЬThe Fastest Grammar Teacher in the World.тАЭ With not one but two World Records to his name, SinhaтАЩs journey continues to inspire millions of learners and educators across India.

Born in Mumbai and associated for decades with the renowned Thakur Educational Trust, Sinha has built an extraordinary career that blends high-energy teaching, innovative learning techniques, and a relentless passion for simplifying English grammar.
A Marathon Like No Other: 73 Hours of Non-Stop Grammar
On 20 October 2005, the world witnessed a feat that had never been attempted before.
At a health club in Bandra, Mumbai, Sanjay Kumar Sinha embarked on a teaching marathon that stunned students, officials, and the global education community.
For 73 hours and 37 minutes, Sinha taught grammar without significant breaks тАФ solving over 10,000 grammar questions, addressing 73 students (59 of whom lasted till the end), and undergoing medical monitoring throughout.
The documentation prepared for Guinness verification weighed more than 6.5 kg.
This extraordinary effort earned him a place in the Guinness Book of World Records and made headlines across India and abroad.
Teaching Nearly 1,000 Students тАФ In Record Time
Two years before the marathon, on 31 January 2003, Sinha set another jaw-dropping record:
He conducted the fastest grammar teaching session in the world, training nearly 1,000 students in essential grammar rules тАФ all of whom later scored 100% in the assessment.
This achievement cemented his reputation as a global innovator in rapid-learning techniques.
The Man Behind the Movement: A Teacher Who Transformed Grammar Learning
With a teaching career spanning more than three decades (1990тАУpresent), Sinha has become a household name among students preparing for competitive exams and spoken English programs.
His classes are known for:
- Quick shifts in teaching techniques
- Simplifying complex grammar into easy modules
- High engagement and retention
- Rapid-learning-focused delivery
Reports indicate that Sinha has taught over 20,000 students every year, shaping the foundations of English learning for lakhs of students across India.
Author of IndiaтАЩs Most Popular Grammar Series
Sanjay Kumar SinhaтАЩs contributions extend far beyond the classroom.
He is the author of several bestselling grammar textbooks, including:
- The KingтАЩs Grammar
- The QueenтАЩs Grammar
- The PrinceтАЩs Grammar
- The PrincessтАЩ Grammar
These books, widely used in schools and competitive exam training centres, continue to guide thousands of learners in mastering English grammar.
A Media Favourite and Global Inspiration
SinhaтАЩs achievements have been widely featured in:
- BBC News
- Mumbai Mirror
- National TV channels
- Educational broadcasters and YouTube platforms
International talent platforms and education forums have also recognized his innovative contributions to modern grammar teaching.
A Legacy Built on Passion and Persistence
Today, Sanjay Kumar Sinha is celebrated not just as a teacher, but as a revolutionist who redefined the way grammar is taught in India. His world records, timeless books, and unwavering commitment to education continue to inspire students and educators alike.
Whether itтАЩs a Guinness World Record classroom or a simple grammar textbook, his mission has remained the same for over 30 years тАФ
to make English grammar simple, accessible, and exciting for everyone.

