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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.

Teacher information, qualifications and results are provided by the teachers themselves and reviewed by the subject group. Certificates and de-identified score records can be provided on request. Nothing here is a guarantee of admission or of a particular exam score, and scheduling depends on each teacher's availability.

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