Historical instructor

TONGHAI YANG

Adjusted rating
RMP difficulty
captured reviews
About this rating

Raw average: 3.02/5 from 45 quality ratings. The adjusted rating blends this with the UW review average (3.66/5), weighted as 20 additional ratings. Smaller samples stay closer to that average. Each captured review is counted once in the prior; this does not correct who chooses to leave a review.

RMP profile ↗ · All captured review dates; profile matched by name.

What students say

Original student reviews · all captured dates

MATH 542
Quality 1/5Difficulty 5/5
The average of the midterm rise from 64 to 71 at the end of the semester. Even given the fact that a lot a lot of Students quit after the midterm, there is no curve on the grades. The workload is way more than 3 credits.
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MATH 542
Quality 1/5Difficulty 4/5
His lectures are awful. No lecture notes, not organized at all. He leaves a lot of homework and seldom provides the solutions in time.The exam scope he gives is very unclear, with almost everything taught and hundred of problems.He is a very tough grader and nearly 1/3 students in his class flee after the midterm. Avoid him at all costs.
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MATH 542
Quality 2/5Difficulty 5/5
Prof Yang is nice. Nothing against him personally. Content: 400 pages of Dummit & Foote from Ring (p. 222) to Galois (p. 640), including difficult topics like Module Theory. Workload: 12 weeks of homework with no lecture notes and selected solutions. Difficulty: Exam averages were low (71.55 and 77.14), yet a 90 overall is required for an A.
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CALC221 · course not matched
Quality 4/5Difficulty 2/5
Funny professor who wants his students to succeed. You get used to his accent, and it's not too bad. Lectures can be quick, but if you read the assigned weekly readings and attend discussion sessions, you'll be fine. Don't need HS calc to do well but do spend some time with the course precalc review. Just be ready to spend time practicing!!
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MATH 221
Quality 2/5Difficulty 3/5
Very nice person who clearly knows a lot about math but has absolutely no idea how to explain it. Just talks about mathematical things he thinks is cool instead of teaching the exam material, and has no problem with exam averages consistently being in the low 70's. Projector or computer breaks at least once a lecture as well.
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MATH 221
Quality 1/5Difficulty 5/5
Very nice, funny guy. Caring as well. As a professor, absolutely not. I have never taken calc, and the way he taught it was like a foreign language. He wrote very fast in lecturers, yet you cant understand his writing. He has a thick accent, and he makes mistakes in lectures all the time. I stopped going cause it was a waste of my time. Dropped it.
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Personal experiences, not a representative survey. Profile matching and captured coverage are shown in the source details.

Classes with TONGHAI YANG

No teaching recorded in Fall 2026.

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Recorded teaching history

Distinct courses recorded per term

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Browse recorded courses
TermCourseTitle
Spring 2026MATH 698Directed Study
Spring 2026MATH 844Arithmetic Geometry
Spring 2026MATH 967Seminar in Number Theory
Spring 2026MATH 990Reading and Research
Fall 2025MATH 542Modern Algebra 2
Fall 2025MATH 698Directed Study
Fall 2025MATH 967Seminar in Number Theory
Fall 2025MATH 990Reading and Research
Spring 2025MATH 698Directed Study
Spring 2025MATH 990Reading and Research
Fall 2024MATH 748Algebraic Number Theory
Spring 2024MATH 221Calculus and Analytic Geometry 1
Spring 2024MATH 698Directed Study
Spring 2024MATH 990Reading and Research
Fall 2023MATH 990Reading and Research
Spring 2023MATH 699Directed Study
Spring 2023MATH 990Reading and Research
Fall 2022MATH 741Abstract Algebra
Fall 2022MATH 849Automorphic Forms
Spring 2022MATH 844Arithmetic Geometry
Spring 2020MATH 990Reading and Research
Fall 2017MATH 221Calculus and Analytic Geometry 1
Spring 2017COMPSCI/MATH/STAT 475Introduction to Combinatorics
Fall 2016MATH 848Advanced Topics in Number Theory
Spring 2016MATH 844Arithmetic Geometry
Fall 2015MATH 221Calculus and Analytic Geometry 1
Fall 2015MATH 341Linear Algebra
Spring 2015MATH 341Linear Algebra
Spring 2015MATH 845Class Field Theory
Fall 2014MATH 990Reading and Research
Fall 2014MATH/STAT 431Introduction to the Theory of Probability
Spring 2013COMPSCI/MATH/STAT 475Introduction to Combinatorics
Spring 2013MATH 234Calculus--functions of Several Variables
Fall 2012MATH 847Topics in Algebra
Spring 2012COMPSCI/MATH/STAT 475Introduction to Combinatorics
Spring 2012MATH 699Directed Study
Spring 2012MATH 844Arithmetic Geometry
Fall 2011MATH 341Linear Algebra
Spring 2011COMPSCI/MATH/STAT 475Introduction to Combinatorics
Spring 2011MATH 941Seminar-algebra
Spring 2011MATH 990Reading and Research
Fall 2010MATH 748Algebraic Number Theory
Fall 2010MATH 941Seminar-algebra
Fall 2010MATH 990Reading and Research
Spring 2010MATH 319Techniques in Ordinary Differential Equations
Spring 2010MATH 699Directed Study
Spring 2010MATH 941Seminar-algebra
Fall 2009MATH 234Calculus--functions of Several Variables
Fall 2009MATH 847Topics in Algebra
Fall 2009MATH 941Seminar-algebra
Spring 2009MATH 222Calculus and Analytic Geometry 2
Spring 2009MATH 541Modern Algebra 1
Spring 2009MATH 699Directed Study
Spring 2009MATH 941Seminar-algebra
Fall 2008MATH 541Modern Algebra 1
Fall 2008MATH 941Seminar-algebra
Spring 2008MATH 541Modern Algebra 1
Spring 2008MATH 941Seminar-algebra
Fall 2007MATH 749Analytic Number Theory
Fall 2007MATH 941Seminar-algebra
Fall 2006MATH 990Reading and Research

Teaching history may be incomplete. Course pages contain course-specific feedback and citations.

Instructor identity & provenance 
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