
Teachers
The faculty behind the courses
Every HBA Online course is taught live by a credentialed subject specialist, and all instruction is delivered in full English. These are thirty of our teachers, grouped by subject — with the degrees, certifications and score records behind the teaching.
Faculty at a glance
A teaching bench deep enough to match every student
Teachers are matched to each student by subject, language preference and time zone. You meet your teacher in a trial session before the course is confirmed, and can change teachers in the opening weeks if the fit is wrong.
- AP-track faculty across the platform
- 240
- College Board certified AP teachers
- 32
- Hold a doctorate or postdoctoral position
- 50
- Subject departments
- 7
The academic bar
Doctorates and top-university master's degrees are preferred, with the teacher's own field matched to the AP subject they teach.
Official certification
College Board AP teacher certification, or experience as an official AP reader or question setter. Two of our faculty are AP readers.
A verifiable record
Reviewable AP 5-rates, or linked A-Level and IB results. Score data is reviewed each exam season by the subject group.
Profiles
Thirty teachers, by subject
The thirty teachers below are a selected sample of the wider faculty, listed by given name and initial. Subjects not shown here are still fully staffed and can be scheduled normally — ask admissions for those teachers' profiles.
Mathematics & Statistics
AP Calculus AB/BC, Statistics and Precalculus. · 5 teachers profiled
Grace L.
AP Calculus
- College Board certified
- Competition coach
- Education
- MS Mathematics, University of Chinese Academy of Sciences; BS Mathematics, Sun Yat-sen University
- AP courses taught
- AP Calculus AB/BC
- AP Precalculus
- Record
- Six students scored 5 in the 2025 AP season
- 2025 A-Level Mathematics A* rate 88%, Further Mathematics 85%; IB Mathematics AA level-7 rate 84%
- 2024 AMC season: 70% AIME qualification, ten students in the global top 5%
Also coaches AMC 8/10/12, AIME, BMO, Euclid and A-Level Mathematics. Published a graph-theory algorithms paper, SCI-indexed, at an international conference.
Daniel S.
AP Statistics & Calculus
- College Board certified
- Competition coach
- Education
- MS Business, Illinois Institute of Technology; BA Economics, University of Iowa
- AP courses taught
- AP Calculus AB/BC
- AP Statistics
- AP Precalculus
- AP Microeconomics
- AP Macroeconomics
- Record
- AP Statistics 5-rate 80%
- AP Micro/Macroeconomics 5-rate 85%
- Former subject teacher at a US top-50 private high school
Eight years of overseas study plus US high school teaching. Also coaches AMC, Euclid and Australian AMC.
Emily Y.
AP Calculus & Statistics
- College Board certified
- Education
- MSc Statistics, University of Warwick; BSc Financial Mathematics, First Class Honours, University of Liverpool
- AP courses taught
- AP Calculus AB/BC
- AP Statistics
- Record
- AP Calculus and Statistics 5-rate 70%
- A-Level Mathematics A-or-above 80%
- 2019 Shanghai VCE Outstanding Mathematics Teacher; 2018 Nanjing Outstanding Educator
Ten years teaching, over a thousand students and ten thousand teaching hours. Registered with both the College Board and Australia's VCAA.
Victor Z.
AP Calculus, Statistics & Physics
- College Board certified
- Competition coach
- PhD / postdoc
- Education
- PhD Management Science, University of Southampton; MSc Operational Research, Lancaster University; BS Physics, East China Normal University
- AP courses taught
- AP Calculus AB/BC
- AP Precalculus
- AP Statistics
- Record
- Over ten years across global financial risk modeling, university teaching and competition coaching
- Taught first- and second-year university mathematics and statistics as a doctoral teaching assistant
- Quantitative analyst at two international banks in London and Hong Kong
Popular with AP, IB and A-Level students alike for a questioning, good-humoured classroom.
Alan S.
AP Calculus, Statistics & Physics C
- Competition coach
- PhD / postdoc
- Education
- PhD Mathematics, full scholarship, University of Rochester; BS Mathematics and Applied Mathematics, Zhejiang University
- AP courses taught
- AP Calculus AB/BC
- AP Statistics
- AP Physics C
- Record
- 100% 5-rate in AP Calculus, AP Statistics and AP Physics C
- IB HL level-7 rate 100%; A-Level A-rate 90%
- Three students received Oxford interview offers in mathematics and physics
Four published academic papers. Also coaches AMC, AIME, Euclid, HMMT, MAT, STEP and summer-program applications.
Physics
AP Physics 1, 2 and C (Mechanics and Electricity & Magnetism). · 4 teachers profiled
Kevin G.
AP Physics C & Physics 1
- College Board certified
- Education
- MS Electrical Engineering, Columbia University; BS Biomedical Engineering with a minor in Computer Engineering, Cornell University
- AP courses taught
- AP Physics C: Mechanics
- AP Physics 1
- Record
- Scored 5 on every AP course he self-studied in US high school
- National Honor Society; first prize, MCM mathematical modeling
- Mentored three high school students admitted to Cornell
Thirteen years living, studying and working in the US. Teaching assistant for Cornell's data visualization course, guiding over fifty students.
Ryan Z.
AP Physics, full range
- College Board certified
- Competition coach
- Education
- MS Physics, Brown University; BS Physics, Zhejiang University
- AP courses taught
- AP Physics 1 & 2
- AP Physics C: Mechanics
- AP Physics C: E & M
- Record
- Graduate advisor was Leon N. Cooper, 1972 Nobel laureate in physics and co-author of BCS theory
- Undergraduate advisor was Prof. F. Malte Grosche of Cambridge's Cavendish Laboratory
- Completed brain-computer interface algorithm research in the US in 2022
Also coaches IB Physics, A-Level, Physics Bowl, F=ma, BPhO, USAPhO, BAAO and PUPC.
Ethan X.
AP Physics
- College Board certified
- Education
- MEng Mechanical Engineering, University of Melbourne; BEng Chemical Machinery, Dalian University of Technology
- AP courses taught
- AP Physics 1 & 2
- AP Physics C
- Record
- AP 5-rate of approximately 90%
- 2024 A-Level: A* rate above 50%, A rate above 70%; five IBDP students scored 7
- 2024–25 BPhO: 8 gold, 2 silver, 2 bronze. Physics Bowl: 11 gold, 15 silver, 12 bronze
Runs physics courses and international competition coaching in parallel, with a system for planning, delivery, feedback and revision.
Leo R.
AP Physics
- College Board certified
- Education
- MSc, Delft University of Technology, government scholarship; MEng and BEng, Harbin Institute of Technology
- AP courses taught
- AP Physics 1 & 2
- Record
- 2023: coached 25 AP sittings — 19 scored 5 and 4 scored 4
- 2024: 13 BPhO students with a 92% award rate — 4 gold, 6 silver, 1 bronze
- 2023 Physics Bowl award rate 75%
Over a thousand hours of international curriculum teaching; explains physics against everyday applications.
Chemistry
AP Chemistry, with olympiad coaching across UKChO, USNCO, CCC and IChO. · 4 teachers profiled
Michael L.
AP Chemistry
- College Board certified
- Competition coach
- PhD / postdoc
- Education
- Postdoctoral researcher, Fudan University; PhD Organic Chemistry, Hong Kong University of Science and Technology; MS Medicinal Chemistry and Nano Engineering, East China University of Science and Technology
- AP courses taught
- AP Chemistry
- Record
- 2026 IChO: one student won the sole gold on the UK national team
- 2026 UKChO: 22 gold, 10 silver, 2 bronze — 34 of 38 entrants awarded
- 2025 UKChO: 25 gold, 5 silver, 1 bronze; CCC: 6 gold, 5 silver, 5 bronze
Ten SCI papers, seven as first author, highest impact factor 16.3, with patented results. Long-serving chemistry teaching assistant during doctoral study.
Claire Z.
AP Chemistry
- Competition coach
- PhD / postdoc
- Education
- PhD Chemistry, US university; chemistry throughout undergraduate, master's and doctoral study
- AP courses taught
- AP Chemistry
- Record
- AP Chemistry class 5-rate 78%
- 2024 AS Chemistry: A rate 75%, 62% predicted to A*
- 2024–25: JCCO 5 gold 3 silver, CCC 4 gold 2 silver, UKChO 5 gold 3 silver; top ESAT chemistry score 8.9
Over ten years in international education, covering chemistry from grade 9 through grade 12.
Oliver S.
AP Chemistry
- Competition coach
- Education
- PhD candidate and MS Chemistry, University of Chicago; MPhil Chemistry, University of Cambridge; MChem, University of Oxford
- AP courses taught
- AP Chemistry
- Record
- 30+ students coached: 11 admitted to Oxford or Cambridge, more than 10 to Imperial College
- All three Oxford chemistry interviewees he prepared were admitted in 2024
- Helped set Oxford chemistry department interview questions in 2022
Graduated eighth overall in Oxford's chemistry department. Several first-author theoretical chemistry papers and a joint project with MIT. 1,500+ teaching hours.
Nina S.
AP Chemistry & Environmental Science
- College Board certified
- Education
- MSc Water Science and Engineering, TU Dresden; BEng Environmental Engineering, Ocean University of China
- AP courses taught
- AP Chemistry
- AP Environmental Science
- Record
- More than 80% of A-Level students reach A or A*
- More than 90% of IGCSE students score a 9
- Researcher in environmental chemistry at the Helmholtz Centre for Environmental Research; DAAD scholarship recipient
Expert in organic and inorganic laboratory work; pairs chemical theory with real experimental procedure. Averages 120+ teaching hours a month.
Biology & Environmental Science
AP Biology and AP Environmental Science, with USABO, BBO and Brain Bee coaching. · 4 teachers profiled
Jason Y.
AP Biology
- College Board certified
- Competition coach
- Education
- MS Bioinformatics and Computational Biology, University of Texas at Dallas; BS Nutrition, University of Wisconsin–Madison
- AP courses taught
- AP Biology
- Record
- 2026 BBO: 25 gold, 18 silver, 3 bronze; one student reached the national team through CBO
- 2026 USABO: five students reached the semifinal
- 2025 USABO: 5 super-gold, 12 gold, 13 silver, 15 bronze, 1 finalist
Lead author of the USABO and BBO course materials. First-author SCI paper from a vitamin A research laboratory; formerly at ABS Global.
Iris Z.
AP Biology
- Competition coach
- Education
- MSc Pharmacy, University College London; BS Biology, Pennsylvania State University
- AP courses taught
- AP Biology
- Record
- AP Biology 5-rate 100%
- IB level-7 rate above 90%; A-Level A* rate above 90%
- Took a student from an E to an A in biology, admitted to UCL and Manchester
National biology curriculum lead, driving teaching standardization across the team. Qualified counselor; uses interest to work through learning blocks.
Helen J.
AP Biology & Environmental Science
- College Board certified
- Education
- MS, Nanjing Agricultural University; College Board certified AP teacher
- AP courses taught
- AP Biology
- AP Environmental Science
- Record
- Ten years teaching AP, IB and A-Level biology and environmental science
- Students sent to the exam each year score predominantly 4 to 5
- Maintains a complete teaching and examination resource library
Builds knowledge networks with visual diagrams and is particularly strong on reading exam trends.
Chris L.
AP Biology & Chemistry
- Competition coach
- PhD / postdoc
- Education
- Direct-entry PhD, School of Pharmacy, University of Queensland; BEng Environmental Science and Engineering, Southern University of Science and Technology
- AP courses taught
- AP Biology
- AP Chemistry
- AP Environmental Science
- Record
- First-author SCI paper published as an undergraduate; five SCI papers during doctoral study
- Provincial first prize, National Biology Olympiad, as a high school student
- Long-time tutor to undergraduates at Oxford, Cambridge, UCL and Sydney
Targets the gap between high school AP content and overseas university coursework — exam performance now, and readiness later.
Computer Science
AP Computer Science A and Principles, with USACO coaching at every level. · 4 teachers profiled
Marcus T.
AP Computer Science, Calculus & Statistics
- College Board certified
- Education
- MS Data Science, Faculty of Engineering, University of Sydney; BS Statistics, Simon Fraser University, top 5% with Dean's Honor Roll
- AP courses taught
- AP Computer Science A
- AP Calculus AB/BC
- AP Statistics
- Record
- 2021–24: 150+ students in AP Calculus and Statistics — Calculus 5-rate 100%, Statistics 90%
- 2024 AMC 8: three students won global Distinguished Honor Roll, top 1%
- 2022 and 2023 AMC 10/12: multiple AIME qualifiers including top 1% DHR
Former Tencent data analyst, and a graduate of a Cambridge international school on the A-Level track.
Andrew H.
AP Computer Science
- College Board certified
- Competition coach
- Education
- MPhil Technology Policy, University of Cambridge; BS Computer Science and Mathematics, University of Nebraska–Lincoln; US high school graduate
- AP courses taught
- AP Computer Science A
- AP Calculus AB/BC
- AP Statistics
- Record
- Every AP Computer Science A student he taught scored 5 in 2022
- Two USACO silver medalists in 2021; three bronze in 2022
- Lead author of several competition texts, including USACO and introductory Python
Four and a half years of undergraduate scholarships; three years as a computer science teaching assistant and course leader. Java, Python, C/C++, R and Swift.
Peter L.
AP Computer Science, Calculus & Statistics
- College Board certified
- Official AP reader
- Competition coach
- PhD / postdoc
- Education
- PhD Computer Science, Los Alamos National Laboratory; MS Electronic Information, Northeastern University; BS Physics, Wuhan University
- AP courses taught
- AP Computer Science A
- AP Computer Science Principles
- AP Calculus AB/BC
- AP Statistics
- Record
- AP Computer Science: over 50% perfect scores and a 100% pass rate
- An entire AP Calculus class of 31 students scored 5
- AP Statistics 4-to-5 rate above 70%
Official College Board AP reader for Computer Science and Calculus. Two-time USACO coach; his youngest student reached Platinum at twelve.
Steven L.
AP Computer Science
- College Board certified
- Competition coach
- Education
- BS and MS Computer Science, University of California, Riverside
- AP courses taught
- AP Computer Science A
- AP Computer Science Principles
- Record
- Ten years living and working in the US
- Deep grounding in how programs interact with hardware at a low level
- Coaches USACO bronze, silver and gold in C++, plus CCC and USAAIO
Focused on building independent learners — moving students from being taught to choosing to learn.
Economics & Business
AP Microeconomics and Macroeconomics, with NEC, IEO and business-case coaching. · 4 teachers profiled
Bella B.
AP Economics & business competitions
- College Board certified
- Competition coach
- Education
- MS Social Entrepreneurship, Hult International Business School, San Francisco; BBA, Autonomous University of Barcelona, with an exchange at Texas A&M's Mays Business School
- AP courses taught
- AP Microeconomics
- AP Macroeconomics
- Record
- Multiple national first places at IEO and NEC, including a global first in an individual event
- 2025 IEO global finals: a student placed fifth globally with a gold medal and Best in Economics
- 2025 NEC nationals: eight teams coached, four advanced to globals, three students entered the perfect-score hall of fame
Certified by the College Board, Cambridge International Education and the IBO; certified IEO, NEC and FBLA coach and a repeat finals judge.
Jerry J.
AP Economics
- College Board certified
- Competition coach
- Education
- MS Business Analytics, Schulich School of Business, York University; BA Finance and Business Economics, York University; BS, Harbin Institute of Technology
- AP courses taught
- AP Microeconomics
- AP Macroeconomics
- Record
- AP 5-rate and A-Level A/A* rate both above 90%
- More than 6,000 cumulative teaching hours
- 2025 IEO nationals: coached the gold-winning Best Team in Business Case Presentation
Years of North American study and work; familiar with overseas grading systems and graduate applications, so planning runs long-term.
Alice L.
AP Economics
- Education
- MSc Finance, King's College London; BA Economics, University of Melbourne
- AP courses taught
- AP Microeconomics
- AP Macroeconomics
- Record
- AP Micro and Macroeconomics 5-rate 90%
- A-Level A rate 85%; IGCSE A rate 85%; IB SL/HL level 6–7 rate 80%
- Helped over a hundred AP and IB students win US Ivy League admissions
Six years teaching and more than 10,000 hours. Brings live cases — Fed rate decisions, currency moves, accounting standard changes — into the classroom.
Ivan Z.
AP Economics
- Education
- MS Engineering Management, New York University; dual BS in Finance and Supply Chain Management, Syracuse University
- AP courses taught
- AP Microeconomics
- AP Macroeconomics
- Record
- 2026 BPA regionals: one team won national bronze and two students took gold
- 2026 SIC S14: one student won an individual silver
- Nine years of overseas and financial-industry experience, formerly at a well-known venture capital firm
Designs scenario-based teaching from investment practice, breaking down complex concepts and building global commercial perspective.
Humanities, Psychology & English
AP English, Psychology, Art History and the Capstone research sequence. · 5 teachers profiled
Sophia L.
AP English Language & Literature
- Education
- MA, Columbia University; BA English, Reed College; graduate of Shanghai American School
- AP courses taught
- AP English Literature and Composition
- AP English Language and Composition
- Record
- Own AP record: 5 in US History, European History and Calculus
- College Board AP Scholar with Honor; TOEFL 110
- Students won SUPREME, EXCELLENT and HONORABLE awards at US national media competitions in 2019
More than seven years studying and teaching in the US; former instructor and teaching assistant in Tulane's French department. Knows how American writing is graded.
Fiona J.
AP Psychology
- PhD / postdoc
- Education
- PhD Psychology, University College London; Academic Tutor, UCL Department of Psychology
- AP courses taught
- AP Psychology
- Record
- AP Psychology 5-rate 90%
- Three students earned an A in the May 2022 A-Level Psychology examination
- Research at US, Tsinghua and Peking University psychology laboratories
Six years of overseas study across both the UK and US psychology systems; a strong biology background lets her teach concepts through the underlying empirical research.
Chloe G.
AP Psychology & English
- Competition coach
- Education
- MSEd, University of Pennsylvania; BA Psychology, Bryn Mawr College
- AP courses taught
- AP Psychology
- AP English Language and Composition
- Record
- AP Psychology 5-rate 90%; AP English Language 5-rate 80%
- HOSA Behavioral Health: 100% regional advancement, 100% national silver, 60% gold
- Four years of SAT grammar coaching — best student result 390, average gain above 50 points
Rigorous and strongly analytical, with a distinctive read on social science questions. Also coaches IB EE, EPQ and John Locke.
Vivian W.
AP Art History & Literature
- Education
- EdD candidate, University of Hong Kong; MA Education, University College London
- AP courses taught
- AP Art History
- AP English Literature
- Record
- A-Level Literature and History A-or-above rate 95%
- IB TOK level-6-or-above rate 80%; DSE Chinese level-5 rate 85%
- John Locke and other humanities competitions: 70% shortlisting rate
Five years teaching IB, AP and A-Level humanities; holds both a high school teaching license and IB teacher certification. Rebuilds students' academic writing from the ground up.
Tony L.
AP Environmental Science & Chemistry
- Education
- PhD candidate, University of Toronto; MEng, Harbin Institute of Technology
- AP courses taught
- AP Environmental Science
- AP Chemistry
- Record
- Multiple students scored 5 in AP Environmental Science and AP Chemistry
- Multiple A grades in IGCSE Chemistry
- Several SCI publications and extensive research experience
Teaches environmental science and chemistry in parallel, with detailed, lively explanation of every concept.
Meet a teacher
See a class before you commit
Tell us the AP subjects you need and your time zone. Within 48 hours we arrange trial sessions with two or three matched teachers and send their qualification records.

Start whenever you are ready.
Rolling admission — both programs begin in any term. Tell us the grade, the current school and the goal, and we will come back within one business day.
Replies within one business day, Monday to Friday. · Four terms a year: fall, winter, spring and summer.
- WASC accredited
- UC A–G approved
- NCAA approved
- College Board AP school
