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
Pricing plans
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Transparent, simple pricing. All lessons are conducted online.
Start with a free trial — no commitment required.
What students & parents say
Trusted by IB students across the region
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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
Common Questions
Everything you need to know
Do you teach both SL and HL for Chemistry and Biology? Yes โ Dr. Crystal covers all covers for IB Chemistry and IB Biology at both Standard Level (SL) and Higher Level (HL). Lessons are tailored to your specific level and syllabus.
How about โOโ Levels and โAโ Levels for Chemistry and Biology? Yes โ Dr. Crystal also teaches students who are preparing for โOโ Levels and/or โAโ Levels for Chemistry and Biology. Send us a message to discuss the lesson plans required for the student.
How does the free trial lesson work? Simply fill in the contact form and request a free trial. Dr. Crystal will reach out within 24 hours (or earlier) to schedule the trial online session on any topic of your choice. There is no payment required for the trial.
What platform are lessons conducted on? All lessons are conducted online via Zoom.
Can I reschedule a lesson if something comes up? Yes, lessons can be rescheduled with reasonable notice (ie 1 day earlier).
Do you teach students outside Singapore? Absolutely. Dr. Crystal currently teaches students based in Singapore as well as overseas. Since all lessons are online, location is not a barrier โ only time zones need to be considered.
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
- No commitment required
- Online & flexible scheduling
