Current instructor

Yang Bai

/5Adjusted rating
/5RMP 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 531

Introduction to Quantum Mechanics

3 credits

Introduction to quantum mechanics covering historical background, experimental basis, and key principles like the Schrödinger equation and Pauli principle.

Offering recorded · Fall 2026

Recent recorded grades — Spring 2013: 3.21 GPA, 42.9% A/AB (n=28 letter grades); Spring 2014: 3.47 GPA, 72.2% A/AB (n=18 letter grades); Spring 2017: 3.26 GPA, 56.0% A/AB (n=25 letter grades).

Yang Bai

historical GPA · grades

Spring 2022–Spring 2026
PHYSICS 990

Research

1–12 credits

PHYSICS 990 is a research course where students conduct supervised research projects with individual faculty members.

Offering recorded · Fall 2026

Pupa GilbertIrena Knezevic+78 more

No recorded grade history

Recorded teaching history

Explore courses taught by this instructor →
Browse recorded courses
TermCourseTitle
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": "2026-09-07 15:55:43.033547+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": "2026-09-07 15:58:09.292276+00:00",
    "courses": {},
    "bayesian_quality": 3.7997381529554963,
    "prior_mean": 3.6596857835465957,
    "prior_weight": 20
  },
  "current": true,
  "courses": [
    {
      "course_uid": "course_2cb7db51eaa5d222785db718",
      "course_id": "PHYSICS 531",
      "title": "INTRODUCTION TO QUANTUM MECHANICS",
      "credits_min": 3,
      "credits_max": 3,
      "gpa": 3.226
    },
    {
      "course_uid": "course_6bdb43fa4ad7d835066b602c",
      "course_id": "PHYSICS 990",
      "title": "RESEARCH",
      "credits_min": 1,
      "credits_max": 12,
      "gpa": null
    }
  ],
  "revision": "e243353dcb7d79b7247ced91d69443ef4c2a6349",
  "instructor_url": "/instructors/YANG_BAI"
}