95%
score Grade 6 or 7
SL & HL
Chemistry & Biology
300+
Students taught, across 4+ countries
Why Dr. Crystal
Everything you need to ace your IB exams
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A complete system — not just lessons. Concise notes, IA guidance, exam technique, and ongoing support.
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PhD-level expertise
Dr. Crystal holds a PhD in Health Biotechnology and BSc (Hons)
Biochemistry with Distinction —
deep subject knowledge that translates into clearer explanations.
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Concise study materials
Receive well-structured notes and worksheets tailored to the IB syllabus — no fluff, just the keywords and techniques examiners are looking for.
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IA & EE guidance
Get personalised help with your Internal Assessment and Extended Essay — from idea generation and experimental planning to report writing.
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Bilingual lessons
Fully fluent in English and Mandarin — Dr. Crystal can explain complex concepts in whichever language helps concepts land fastest.
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Personalised lesson plan
No two students are the same. Your lesson plan is built around your weak areas, your school's pace, and your target grade.
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Top-ranked tutor
Ranked among the top tutors in Singapore across 50,000+ tutors by a leading tuition agency. Trusted by students from ACS, SOTA, SJI, Hwa Chong, and more.
Recent student results
Real grades. Real students.
Selected results from recent exam sessions — names partially concealed for privacy.
Ka***
HL Chemistry · Dover Court International, SG · May 2025
Gu***
SL Biology · Ruamrudee International, Thailand · May 2025
Ty***
HL Chemistry · SJI International, SG ·
Nov 2024
As***
HL Chemistry & Biology · ACS International, SG · Nov 2024
Ce***
SL Biology · SOTA, SG · Nov 2024
Hi***
HL Chemistry · ACS Independent, SG ·
Nov 2024
Ry***
HL Chemistry · SJI International, SG ·
Nov 2024
Ni***
SL Chemistry · SOTA, SG · Nov 2024
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"I got a 7 for Chem. Dr. Crystal made topics I'd been struggling with for months click within a single lesson. The notes she provides are honestly better than anything my school gave me."
โโAlexis
IB Chemistry SL · Singapore
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"I got 6 for chem and 42 overall — I'm super surprised and so grateful. I genuinely wouldn't have done it without Dr. Crystal's help and constant encouragement."
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Faith
IB Chemistry · Singapore
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"Very honoured to know Dr. Crystal. She is an extremely outstanding and responsible teacher who genuinely cares about each student's progress."
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ๆๅฅณๅฃซ
Parent · Taiwan
Get in Touch
Start with a free trial lesson
Fill in the form and Dr. Crystal will reply within 24 hours to confirm your free trial. No payment, no commitment.
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- Reply within 24 hours
- First lesson completely free
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- Online & flexible scheduling
