Current instructor

Yang Bai

Adjusted rating
RMP difficulty
captured reviews
About this rating

Raw average: 4.50/5 from 4 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

PHY115 · course not matched
Quality 5/5Difficulty 1/5
hes a cool bean tho :>
Rate My Professors ↗
PHY115 · course not matched
Quality 5/5Difficulty 1/5
He's a tough teacher, constaly giving me bad grades, made me cry ON THE FIRST DAY. But He's the most skibidi rizzler in Ohio he fanum taxed livvy dunn's gyatt with kai cenat coems style from the gyatt to the rizz to the sudz to the mew gyatt rizzler fr fr
Rate My Professors ↗
PHY115 · course not matched
Quality 3/5Difficulty 2/5
Professor Bai's lecture slides were all posted online, but you did have to memorize them all if you wanted a decent chance at getting a good grade on the exams. The weekly homework was all math based and the exams were more conceptual. He asked random questions from lecture about percents, facts, etc. Overall good guy and class for quant B.
Rate My Professors ↗

Personal experiences, not a representative survey. Profile matching and captured coverage are shown in the source details.

Classes with Yang Bai

PHYSICS 535

Introduction to Particle Physics

3 credits

Introduction to particle physics covering quantum physics review, fundamental interactions, detectors, accelerators, symmetries, and unification theories.

Offering recorded · Spring 2027 · Sources

Recent recorded grades — Spring 2018: 3.62 GPA, 84.6% A/AB (n=13 letter grades); Spring 2024: 3.77 GPA, 90.9% A/AB (n=11 letter grades).

Yang Bai

historical GPA · grades

Spring 2023–Spring 2026 · limited sample
PHYSICS 990

Research

1–12 credits

Research supervised by individual faculty members. Students formulate and plan original research, creating work that contributes to the field of physics.

Offering recorded · Spring 2027 · Sources

Pupa GilbertIrena Knezevic+78 more

No recorded grade history

Recorded teaching history

Distinct courses recorded per term

Explore courses taught by this instructor →
Browse recorded courses
TermCourseTitle
Spring 2027PHYSICS 499Directed Study
Spring 2027PHYSICS 535Introduction to Particle Physics
Spring 2027PHYSICS 681Senior Honors Thesis
Spring 2027PHYSICS 682Senior Honors Thesis
Spring 2027PHYSICS 691Senior Thesis
Spring 2027PHYSICS 692Senior Thesis
Spring 2027PHYSICS 990Research
Fall 2026PHYSICS 531Introduction to Quantum Mechanics
Fall 2026PHYSICS 990Research

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

Instructor identity & provenance 
{
  "instructor_uid": "instructor_46a21c56d35f5c7c42c7cf79",
  "source": "enrollment",
  "source_instructor_id": "bai29",
  "identity_basis": "netid",
  "identity_status": "source_identified",
  "name": "Yang Bai",
  "email": "YANGBAI@PHYSICS.WISC.EDU",
  "first_observed_at": "2026-09-07 15:55:43.033547+00:00",
  "last_observed_at": "2026-10-14 17:50:09.728220+00:00",
  "ratings": {
    "review_count": 4,
    "quality": 4.5,
    "difficulty": 1.25,
    "quality_count": 4,
    "difficulty_count": 4,
    "profile_id": "rmp:2110939",
    "source_url": "https://www.ratemyprofessors.com/professor/2110939",
    "match_basis": "exact_name",
    "observed_at": "2026-10-14 18:20:35.056595+00:00",
    "courses": {},
    "bayesian_quality": 3.7993279837470584,
    "prior_mean": 3.65919358049647,
    "prior_weight": 20
  },
  "current": true,
  "courses": [
    {
      "course_uid": "course_11ca6b2588608c9b32506d53",
      "course_id": "PHYSICS 692",
      "title": "SENIOR THESIS",
      "credits_min": 2,
      "credits_max": 3,
      "gpa": 4
    },
    {
      "course_uid": "course_20648c54cfcd4858fda49657",
      "course_id": "PHYSICS 535",
      "title": "INTRODUCTION TO PARTICLE PHYSICS",
      "credits_min": 3,
      "credits_max": 3,
      "gpa": 3.748
    },
    {
      "course_uid": "course_478c9473f982809f4cde8cec",
      "course_id": "PHYSICS 499",
      "title": "DIRECTED STUDY",
      "credits_min": 1,
      "credits_max": 3,
      "gpa": 4
    },
    {
      "course_uid": "course_543dcc107458b8f7cacca29d",
      "course_id": "PHYSICS 691",
      "title": "SENIOR THESIS",
      "credits_min": 2,
      "credits_max": 3,
      "gpa": null
    },
    {
      "course_uid": "course_6bdb43fa4ad7d835066b602c",
      "course_id": "PHYSICS 990",
      "title": "RESEARCH",
      "credits_min": 1,
      "credits_max": 12,
      "gpa": null
    },
    {
      "course_uid": "course_bf60eeaf8405d6fec7ab9391",
      "course_id": "PHYSICS 681",
      "title": "SENIOR HONORS THESIS",
      "credits_min": 3,
      "credits_max": 3,
      "gpa": null
    },
    {
      "course_uid": "course_ef30c98738891e8e37379887",
      "course_id": "PHYSICS 682",
      "title": "SENIOR HONORS THESIS",
      "credits_min": 3,
      "credits_max": 3,
      "gpa": 3.5
    }
  ],
  "revision": "fc1811fa52e581ea57a35c0cf3343f8740a8ffbf",
  "instructor_url": "/instructors/YANG_BAI"
}