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Published: 2025-09-28
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Published: 2025-09-28
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Published: 2025-09-28
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Sri Lanka's Premier English Medium Institute.

Join a community of 600+ students mastering Mathematics, Science &English with result-oriented methods. We make learning simple, fun and effective for every child.

Boost your school skills
Expert English, Science & Maths Faculty
Track Progress via our LMS Portal

+9476 000 4253

ENROLL NOW

PHOTO GALLERY

Photos Of Memorable Events

Teaching

Unparalleled teaching and knowledge is provided by our lecturers and educators. We are always FIRST to come up with new teaching methods and tricks.

Activities

We never stick to the books and the classroom... We explore the world. We search for meanings, because the time you enjoy wasting is not wasted time.

Events

Our events celebrate the heartbeat of our institute. We bring students, parents, and educators together and foster a strong, supportive learning community.

VIDEO GALLERY

Videos of Memorable Events

Our Annual Trip-2024

📍 Journey to Riverston, Matale | Math, Memories & Misty Mountains 🌿📚 Join us as the Treston Institute crew trades the classroom for the clouds!...

Cultural Carnival

A lively celebration of diverse traditions, arts, and festivities.

Student Leadership Summit

Empowering future leaders through collaboration and inspiration.

Teachers

Our Expert Teachers

Asela Dhananjaya

Co-Founder

K.H.C.L. Kasthuri Arachchi

Co-Founder

Learn New Skills

Build real-world confidence through interactive lessons designed for academic excellence.

Expert Teacher

Learn from dedicated specialists with years of experience in the Sri Lankan English Medium syllabus.

Online Learning

Access lesson materials and track individual academic progress anytime through our integrated LMS portal.

Local Curriculum

Comprehensive coverage of the Sri Lankan National Syllabus for English Medium students

Cambridge

World-class preparation for Cambridge IGCSE and O/L exams with global standards.

Pearson Edexcel

Expert coaching for Pearson Edexcel qualifications, focusing on analytical success.

JOIN EVENTS

Join Upcoming Events

Join with us to improve your skills and knowledge.

#CLIENT TESTIMONIAL

What Clients Say About Us

“ Maths used to be my most difficult subject, but Asela sir made it look so simple. They cover the ... ”

A Grade 11 Student, Student N/A

“ Our son was struggling quite a bit with English Medium Maths, especially with the term tests. Sin... ”

Parent of a Grade 10 Student, Parent N/A

“ I’ve seen many tuition centers in the area, but the way Treston manages its teaching methods is t... ”

English Medium Teacher, Teacher International School

# POPULAR ARTICLES

Latest News From Blog

Choose the most powerful courses and always

2024-03-14 Our Annual Trip-2024 Read More

2024-05-22 Vesak Dansala Read More

Notice Board

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Published: 28 Sep, 2025