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 “The Fastest Grammar Teacher in the World.” With not one but two World Records to his name, Sinha’s 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 — 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 — 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 — 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 (1990–present), 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 India’s Most Popular Grammar Series

Sanjay Kumar Sinha’s contributions extend far beyond the classroom.
He is the author of several bestselling grammar textbooks, including:

• The King’s Grammar
• The Queen’s Grammar
• The Prince’s Grammar
• The Princess’ 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

Sinha’s 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 it’s a Guinness World Record classroom or a simple grammar textbook, his mission has remained the same for over 30 years —
to make English grammar simple, accessible, and exciting for everyone.