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O Level Bio Tuition Classes │ Secondary Biology Tuition in Singapore

Turn complex concepts into clear understanding with Overmugged's evidenced-based O-level Biology tuition methods!

Biology is a fascinating subject that helps us understand the living world around us.

But as many biological concepts involve abstract thinking, require memorising a significant amount of information and knowing how to apply biological concepts to real-life scenarios, this can be a challenging subject for many students.

OVERMUGGED equips students with the right approach to tackling the subject and preparing them for the O-level Biology examination with our specialised O-level Biology tuition in Singapore.

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At OVERMUGGED, our approach is designed to provide students with a clear and manageable path to understanding a rigorous subject like O-level Biology.

With our meticulously crafted O-Level Biology syllabus, we prioritise breaking down these intricate concepts into smaller, more digestible parts.

By starting with the basics and gradually building upon them, students can establish a solid grasp of the subject matter. This incremental approach encourages confidence and minimises the intimidation that often accompanies complex topics.

This also serves a twofold purpose: it helps students avoid feeling overwhelmed by the complexity of the subject and enables them to build a strong foundational understanding of each topic.

What Makes OVERMUGGED a Cut Above Other O-Level Biology Tuition Centres

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Highly experienced O-Level Biology tutors

Our team of experienced biology tutors has a wealth of tutoring experience for O-level Biology students, averaging about 6-12 years in the field.


Experts on subjects

Every tutor at OVERMUGGED has extensive knowledge of the specificities and marking requirements of the secondary school subjects they teach.


Proven track record

OVERMUGGED has a consistently high distinction rate, boosting many students from barely passing to getting A1/A2 and preparing them for junior college.


Flexible arrangements

We cater to the needs of different students by ensuring our tuition lessons are available in person and online via Zoom.


Small class sizes

We intentionally keep our class sizes small (4-12 pax.) to provide personalised support for each student and monitor their progress.


Support beyond class

Learning doesn't stop once tuition class is over. Our tutors provide unlimited consultations for students after class to ensure their grasp of crucial concepts.


Exam season preparedness

From providing useful tips for O-level Biology exams for optimal revision to mock trial exams that promote confidence and readiness, our approach is designed to equip students with valuable examination skills.


Specialised Biology classes and activities

We also provide exam-oriented crash courses during school holidays to brush up on fundamental concepts and exam skills.

Experience the effectiveness of the OVERMUGGED method for yourself with a free trial lesson!


Student Testimonials

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Tong En (Jurongville)

Pure Chemistry: C6 to A2

How would you describe your tutor? (Personality, teaching skills, engagement etc...)
Engaging, will really go in depth to clear our questions. v kind also always treat us bubble tea 🌝

What was your biggest takeaways/learnings from tuition lessons?
All the short forms he made so that it’s easier for us to memorize the keywords and the prelim papers he gave.

Describe the difference you felt in terms of academics before attending tuition and after you started attending tuition.
Know the diff keywords for
diff topics ..

Name any specific instances where your tutor did something that meant a lot for you. (Eg: consultations after class, treating you food etc...)
Bubble tea 🌝

I graduated with a Bachelor's degree in Life Sciences and a Minor in Psychology from NUS, with 9 years of teaching experience.

Inspired by my own secondary school teacher, my passion for learning and energy in teaching have allowed me to achieve my goal of helping all my students have a smoother learning journey, and I intend to continue doing so for much of my life.

I've meticulously crafted or vetted curated notes, worksheets, mock papers and other learning materials we may use in our voyage together.

This allows me to give my best efforts and teach with the best materials so that you may, too, become the best you can be!

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Jason Phang



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Hee Xin Wei


I am a biology tutor with 7 years of teaching experience. I have been teaching since I completed my A-levels at Raffles Institution.

I am intrigued by the working of life, which prompted me to read Life Science and Psychology at the National University of Singapore (NUS). Having studied and taught Biology for so many years, I truly believe that everyone can do well in biology. And no! It is not about "just memorising".

A strong understanding of concepts and the ability to link between concepts is the foundation, and practice will lead to excellence. The key idea of doing well in Biology is consistency. I aim to work with my students to move the content knowledge into their long-term memory, making content work for Biology pain-free!

Feel free to reach out to me at @xinweihee on Telegram, be it to ask questions, give feedback or arrange lessons!

Check Out Our Competitive Rates!

Lower Sec:

$35/hr (weekday)

$37.5/hr (weekend)

Upper Sec:

$40/hr (weekday)

$42.5/hr (weekend)

Upper Sec IP:

$45/hr (weekday)

$47.5/hr (weekend)

'A' Levels:

$50/hr (weekday)

$52.5/hr (weekend)


Email us at or reach us directly at WhatsApp

Ace O-Level Biology with OVERMUGGED's exam-focused tuition program

At OVERMUGGED, we have designed our tuition program to address every challenge in your way of passing O-Level Biology examinations.

What you get when you pick our O-level Biology tuition:

  • Specialised Biology notes curated by our experienced tutors

  • Unique answering techniques to get as many marks as possible during exams

  • Biology examination skills to keep calm during high-stress exam periods

  • Focused Biology tuition classes taught by experienced tutors

But don't take our word for it; experience it for yourself.

Sign up for your FREE Biology trial lesson today!


Want to request for extra notes?

We have notes for every chapter & other learning materials like mind maps & mock papers!

Simply join our telegram channel @overmugged & make your request there!

Join our 'O' Levels Telegram Channel here.

Join our 'A' Levels Telegram Channel here.

Join our Lower Sec Telegram Channel here.

Can't find our Telegram channels? Simply search @overmugged, @overmuggedAlevels, @overmuggedlowersec on Telegram to find us!

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