Current instructor

Shannon Stahl

Adjusted rating
RMP difficulty
captured reviews
About this rating

Raw average: 3.40/5 from 25 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

CHEM345HONOR · course not matched
Quality 3/5Difficulty 5/5
Very very smart guy; however, his lectures are average at best. Moves quite fast, and there's an overload of information that doesn't get explained super well. Often gets distracted by his own research interests and takes up lots of lecture time on this, which is interesting but not necessary helpful for exams. Exams are impossibly difficult.
Rate My Professors ↗
CHEM345HONOR · course not matched
Quality 2/5Difficulty 5/5
Professor Stahl is okay at lecturing. He likes to go on tangents quite a bit, and it is hard to follow sometimes. There is a lot of material to understand. His way of teaching is not very effective at helping you to understand it. He strives for the class to average a 50% on exams. They are normally pretty hard exams. Extremely intelligent guy.
Rate My Professors ↗
CHEM345HONOR · course not matched
Quality 3/5Difficulty 5/5
Shannon is extremely smart and is fairly decent at coming down to the student level when teaching. He does talk very fast and can be hard to follow in lecture sometimes. Exams are tough
Rate My Professors ↗
CHEM345HONOR · course not matched
Quality 5/5Difficulty 4/5
He dumps a lot of material on you at once, but he breaks it up with fun life advice tangents. You have to pay pretty close attention during lecture to get anything out of them. His exams are a lot of synthesis - both compounds and class material. You kind of learn while taking them. The class is rough, but Stahl is cool.
Rate My Professors ↗
CHEM345HONOR · course not matched
Quality 4/5Difficulty 4/5
Very intelligent, with a knack for getting students excited about science. But along with this, exams are highly challenging and really test not just how well you know the material but also how well you can integrate and expand upon it.
Rate My Professors ↗
CHEM345HONOR · course not matched
Quality 5/5Difficulty 4/5
He's really smart.
Rate My Professors ↗

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

Classes with Shannon Stahl

A mentored research project arranged with a faculty or academic staff member, offered as Directed Study in Chemistry.

Offering recorded · Spring 2027 · Sources

No recorded grade history

Directed Study is an advanced mentored research project arranged with a faculty or academic staff member.

Offering recorded · Spring 2027 · Sources

Recent recorded grades — Fall 2009: 3.92 GPA, 100.0% A/AB (n=6 letter grades); Spring 2019: 4.00 GPA, 100.0% A/AB (n=6 letter grades).

historical GPA · grades

Spring 2023–Spring 2026 · limited sample
CHEM 990

Research

1–15 credits

Supervised research course where students exhibit broad understanding of chemical principles, conduct independent research, and collaborate with investigators.

Offering recorded · Spring 2027 · Sources

No recorded grade history

Recorded teaching history

Distinct courses recorded per term

Explore courses taught by this instructor →
Browse recorded courses
TermCourseTitle
Spring 2027CBE 790Master's Research or Thesis
Spring 2027CHEM 299Directed Study
Spring 2027CHEM 681Senior Honors Thesis
Spring 2027CHEM 682Senior Honors Thesis
Spring 2027CHEM 699Directed Study
Spring 2027CHEM 990Research
Fall 2026CBE 790Master's Research or Thesis
Fall 2026CBE 890Pre-dissertator's Research
Fall 2026CHEM 299Directed Study
Fall 2026CHEM 343Organic Chemistry I
Fall 2026CHEM 681Senior Honors Thesis
Fall 2026CHEM 682Senior Honors Thesis
Fall 2026CHEM 699Directed Study
Fall 2026CHEM 980Seminar: Review of Current Research
Fall 2026CHEM 990Research

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

Instructor identity & provenance
{
  "instructor_uid": "instructor_0f76077cb3bcf03628cf56c7",
  "source": "enrollment",
  "source_instructor_id": "ssstahl",
  "identity_basis": "netid",
  "identity_status": "source_identified",
  "name": "Shannon Stahl",
  "email": "STAHL@CHEM.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": 25,
    "quality": 3.4,
    "difficulty": 4.16,
    "quality_count": 25,
    "difficulty_count": 25,
    "profile_id": "rmp:123919",
    "source_url": "https://www.ratemyprofessors.com/professor/123919",
    "match_basis": "exact_name",
    "observed_at": "2026-10-14 18:34:09.981237+00:00",
    "courses": {
      "course_ac85748471ecde5924cdc129": {
        "review_count": 1,
        "quality": 4,
        "difficulty": 3,
        "quality_count": 1,
        "difficulty_count": 1
      },
      "course_daf4a0053696c0e96c07064d": {
        "review_count": 10,
        "quality": 2.8,
        "difficulty": 4.8,
        "quality_count": 10,
        "difficulty_count": 10
      },
      "course_34903ee31ae592cff4822461": {
        "review_count": 5,
        "quality": 3.6,
        "difficulty": 3.2,
        "quality_count": 5,
        "difficulty_count": 5
      },
      "course_75930c37cc749772d3f9356c": {
        "review_count": 1,
        "quality": 5,
        "difficulty": 3,
        "quality_count": 1,
        "difficulty_count": 1
      }
    },
    "bayesian_quality": 3.5151971468873198,
    "prior_mean": 3.65919358049647,
    "prior_weight": 20
  },
  "current": true,
  "courses": [
    {
      "course_uid": "course_4a49f7e5e0f126c4d0a2ad0b",
      "course_id": "CHEM 299",
      "title": "DIRECTED STUDY",
      "credits_min": 1,
      "credits_max": 4,
      "gpa": 3.945
    },
    {
      "course_uid": "course_bb4dd399ae999f41d21aab05",
      "course_id": "CHEM 681",
      "title": "SENIOR HONORS THESIS",
      "credits_min": 2,
      "credits_max": 4,
      "gpa": null
    },
    {
      "course_uid": "course_c2f22eab79dc18953ecf833e",
      "course_id": "CHEM 990",
      "title": "RESEARCH",
      "credits_min": 1,
      "credits_max": 15,
      "gpa": null
    },
    {
      "course_uid": "course_f1d2946904cccb2722591cfb",
      "course_id": "CHEM 682",
      "title": "SENIOR HONORS THESIS",
      "credits_min": 2,
      "credits_max": 4,
      "gpa": 4
    },
    {
      "course_uid": "course_fc7dc844a4fe9d3c11f4e103",
      "course_id": "CHEM 699",
      "title": "DIRECTED STUDY",
      "credits_min": 1,
      "credits_max": 6,
      "gpa": 3.968
    },
    {
      "course_uid": "course_fe1406615f7d2e9856ce2a4d",
      "course_id": "CBE 790",
      "title": "MASTER'S RESEARCH OR THESIS",
      "credits_min": 1,
      "credits_max": 9,
      "gpa": null
    }
  ],
  "revision": "fc1811fa52e581ea57a35c0cf3343f8740a8ffbf",
  "instructor_url": "/instructors/SHANNON_STAHL"
}