Current instructor

Mark Hetzler

/5Adjusted rating
/5RMP difficulty
captured reviews
About this rating

Raw average: 2.33/5 from 3 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

MUSPERF 221
Quality 3/5Difficulty 4/5
Hetzler is genuinely a nice guy, but he is super intense. I cried a few times and have feared a few of my lessons. He takes his work very seriously as any musician should, but if you can get through your first year, you should be solid. You never know what you will get walking into a lesson. Don't call him Mark, it's Professor Hetzler!
Rate My Professors ↗
MUSPERF 221
Quality 2/5Difficulty 5/5
Professor Hetzler was my trombone studio professor, and was definitely hired for his music skill, not because he is a good teacher or plays nice with others. He hated that I did marching band while also studying "real music" and c… Read full reviewShow less
Professor Hetzler was my trombone studio professor, and was definitely hired for his music skill, not because he is a good teacher or plays nice with others. He hated that I did marching band while also studying "real music" and could spend half of a music lesson just listing why I shouldn't do marching. I stopped pursuing music because of him.
Rate My Professors ↗
MUSPERF 421
Quality 2/5Difficulty 3/5
Mark is an interesting guy. While he often provides good feedback, he also cannot handle when someone disagrees with his assessment. He finds it disrespectful, and he expects you to take his criticism (which is often as personal as it is professional) and refuses to hear a contradictory views to his own with an open mind. Other times, he's great.
Rate My Professors ↗

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

Classes with Mark Hetzler

MUSIC 267

Ensemble-brass

1 credits

MUSIC 267 is an ensemble course focused on performing brass literature, requiring audition and instructor consent.

Offering recorded · Fall 2026

Recent recorded grades — Spring 2025: 4.00 GPA, 100.0% A/AB (n=19 letter grades); Fall 2025: 4.00 GPA, 100.0% A/AB (n=17 letter grades); Spring 2026: 4.00 GPA, 100.0% A/AB (n=8 letter grades).

Mark HetzlerJean Laurenz+2 more

historical GPA · grades

Spring 2022–Spring 2026
MUSIC 567

Advanced Ensemble-brass

1 credits

Advanced brass ensemble course focusing on performing ensemble literature through audition-based placement.

Offering recorded · Fall 2026

Recent recorded grades — Spring 2016: 4.00 GPA, 100.0% A/AB (n=7 letter grades); Spring 2017: 4.00 GPA, 100.0% A/AB (n=6 letter grades); Spring 2022: 4.00 GPA, 100.0% A/AB (n=3 letter grades).

Mark HetzlerJean Laurenz+2 more

historical GPA · grades

Spring 2022–Spring 2022 · limited sample
MUSIC 798

Seminar-instrumental Literature

2 credits

A graduate seminar providing comprehensive study of major instrumental works with a focus on interpretive and technical issues for advanced musicians.

Offering recorded · Fall 2026

Recent recorded grades — Spring 2022: 4.00 GPA, 100.0% A/AB (n=1 letter grades).

Daniel GraboisMark Hetzler+2 more

historical GPA · grades

Spring 2022–Spring 2022 · limited sample
MUSIC 799

Independent Work

1–3 credits

MUSIC 799 is an independent work course involving faculty-mentored individual study and research.

Offering recorded · Fall 2026

Recent recorded grades — Spring 2022: 4.00 GPA, 100.0% A/AB (n=1 letter grades).

Scott TeepleNadia Chana+35 more

historical GPA · grades

Spring 2022–Spring 2022 · limited sample
MUSPERF 146

Music Lessons for Non-majors

1–2 credits

Private applied music performance instruction for non-majors and music majors studying a secondary instrument.

Offering recorded · Fall 2026

Recent recorded grades — Spring 2022: 4.00 GPA, 100.0% A/AB (n=1 letter grades).

Johanna WienholtsLaura Schwendinger+18 more

historical GPA · grades

Spring 2022–Spring 2025 · limited sample
MUSPERF 21

Brass Fundamentals

1 credits

MUSPERF 21 prepares music educators to teach brass instruments like horn, trumpet, trombone, euphonium, and tuba in K-12 settings.

Offering recorded · Fall 2026

Recent recorded grades — Fall 2023: 3.89 GPA, 88.9% A/AB (n=9 letter grades); Fall 2024: 4.00 GPA, 100.0% A/AB (n=11 letter grades); Fall 2025: 4.00 GPA, 100.0% A/AB (n=12 letter grades). Includes jointly taught sections.

Mark HetzlerJean Laurenz+1 more

historical GPA · grades

Fall 2022–Fall 2025 · limited sample
MUSPERF 221

Elementary/intermediate Trombone

2–4 credits

MUSPERF 221 provides individual trombone instruction for Music majors at the elementary/intermediate level.

Offering recorded · Fall 2026

Mark Hetzler is described as skilled but difficult, with one student citing his negativity toward marching band as a reason to stop pursuing music.

Mark Hetzler

historical GPA · grades

Spring 2022–Spring 2022 · limited sample
MUSPERF 241

Elementary/intermediate Jazz Studio Instruction

2–4 credits

Individual studio instruction in jazz performance for elementary and intermediate students.

Offering recorded · Fall 2026

Mark HetzlerArun Luthra+4 more

historical GPA · grades

Spring 2022–Spring 2022 · limited sample
MUSPERF 421

Advanced Trombone

2–4 credits

Advanced individual trombone instruction requiring instructor consent for first-time enrollment.

Offering recorded · Fall 2026

Mark Hetzler provides good feedback but struggles with disagreement, viewing it as disrespectful. He delivers criticism that is often personal and refuses to consider contradictory views, though he is sometimes great.

Mark Hetzler

historical GPA · grades

Spring 2022–Spring 2022 · limited sample
MUSPERF 441

Advanced Jazz Studio Instruction

2–4 credits

Advanced individual jazz performance instruction requiring concurrent ensemble enrollment.

Offering recorded · Fall 2026

Recent recorded grades — Spring 2022: 4.00 GPA, 100.0% A/AB (n=1 letter grades).

Mark HetzlerArun Luthra+4 more

historical GPA · grades

Spring 2022–Spring 2022 · limited sample
MUSPERF 521

Masters Level-trombone

4 credits

MUSPERF 521 provides masters level individual instruction in trombone performance.

Offering recorded · Fall 2026

Recent recorded grades — Spring 2022: 4.00 GPA, 100.0% A/AB (n=2 letter grades).

Mark Hetzler

historical GPA · grades

Spring 2022–Spring 2022 · limited sample
MUSPERF 721

Doctoral Level-trombone

4 credits

MUSPERF 721 provides individual doctoral-level instruction in trombone performance.

Offering recorded · Fall 2026

Recent recorded grades — Spring 2022: 4.00 GPA, 100.0% A/AB (n=1 letter grades).

Mark Hetzler

historical GPA · grades

Spring 2022–Spring 2022 · limited sample
MUSPERF 999

Dma Recital

1 credits

Preparation and public performance of a Doctoral Recital for Doctor of Musical Arts degree requirements.

Offering recorded · Fall 2026

Recent recorded grades — Spring 2022: 4.00 GPA, 100.0% A/AB (n=2 letter grades).

Scott TeepleChristopher Taylor+22 more

historical GPA · grades

Spring 2022–Spring 2026 · limited sample

Recorded teaching history

Explore courses taught by this instructor →
Browse recorded courses
TermCourseTitle
Fall 2026MUSIC 267Ensemble-brass
Fall 2026MUSIC 499Directed Study
Fall 2026MUSIC 540Advanced Pedagogy
Fall 2026MUSIC 567Advanced Ensemble-brass
Fall 2026MUSIC 798Seminar-instrumental Literature
Fall 2026MUSIC 799Independent Work
Fall 2026MUSPERF 146Music Lessons for Non-majors
Fall 2026MUSPERF 21Brass Fundamentals
Fall 2026MUSPERF 221Elementary/intermediate Trombone
Fall 2026MUSPERF 241Elementary/intermediate Jazz Studio Instruction
Fall 2026MUSPERF 421Advanced Trombone
Fall 2026MUSPERF 441Advanced Jazz Studio Instruction
Fall 2026MUSPERF 499Senior Recital
Fall 2026MUSPERF 521Masters Level-trombone
Fall 2026MUSPERF 541Masters Level Jazz Studio Instruction
Fall 2026MUSPERF 721Doctoral Level-trombone
Fall 2026MUSPERF 999Dma Recital

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

Instructor identity & provenance 
{
  "instructor_uid": "instructor_6f9d292aa4aeba2c3a15e590",
  "source": "enrollment",
  "source_instructor_id": "hetzler",
  "identity_basis": "netid",
  "identity_status": "source_identified",
  "name": "Mark Hetzler",
  "email": "HETZLER@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": 3,
    "quality": 2.33,
    "difficulty": 4,
    "quality_count": 3,
    "difficulty_count": 3,
    "profile_id": "rmp:2002789",
    "source_url": "https://www.ratemyprofessors.com/professor/2002789",
    "match_basis": "exact_name",
    "observed_at": "2026-09-07 16:20:36.978964+00:00",
    "courses": {
      "course_8628a3fabd77918653bca71f": {
        "review_count": 2,
        "quality": 2.5,
        "difficulty": 4.5,
        "quality_count": 2,
        "difficulty_count": 2
      },
      "course_a8df98d8511573954e202977": {
        "review_count": 1,
        "quality": 2,
        "difficulty": 3,
        "quality_count": 1,
        "difficulty_count": 1
      }
    },
    "bayesian_quality": 3.4862485074318217,
    "prior_mean": 3.6596857835465957,
    "prior_weight": 20
  },
  "current": true,
  "courses": [
    {
      "course_uid": "course_0342eb0fad4b03847dab9cc3",
      "course_id": "MUSIC 540",
      "title": "ADVANCED PEDAGOGY",
      "credits_min": 2,
      "credits_max": 2,
      "gpa": null
    },
    {
      "course_uid": "course_27a5a29c82c315abcf4985a3",
      "course_id": "MUSIC 267",
      "title": "ENSEMBLE-BRASS",
      "credits_min": 1,
      "credits_max": 1,
      "gpa": 3.988
    },
    {
      "course_uid": "course_27d8f9545a7f9cf907d78952",
      "course_id": "MUSPERF 541",
      "title": "MASTERS LEVEL JAZZ STUDIO INSTRUCTION",
      "credits_min": 4,
      "credits_max": 4,
      "gpa": null
    },
    {
      "course_uid": "course_2a2798432e36e821a5426cd2",
      "course_id": "MUSPERF 999",
      "title": "DMA RECITAL",
      "credits_min": 1,
      "credits_max": 1,
      "gpa": 3.952
    },
    {
      "course_uid": "course_3dc4aa78107b8da5f7dd733c",
      "course_id": "MUSIC 499",
      "title": "DIRECTED STUDY",
      "credits_min": 1,
      "credits_max": 3,
      "gpa": null
    },
    {
      "course_uid": "course_54ab6e8e6655dcc21b2c1c4d",
      "course_id": "MUSIC 799",
      "title": "INDEPENDENT WORK",
      "credits_min": 1,
      "credits_max": 3,
      "gpa": 3.903
    },
    {
      "course_uid": "course_59000a38969e34c9b9bdbb79",
      "course_id": "MUSPERF 721",
      "title": "DOCTORAL LEVEL-TROMBONE",
      "credits_min": 4,
      "credits_max": 4,
      "gpa": 4
    },
    {
      "course_uid": "course_8628a3fabd77918653bca71f",
      "course_id": "MUSPERF 221",
      "title": "ELEMENTARY/INTERMEDIATE TROMBONE",
      "credits_min": 2,
      "credits_max": 4,
      "gpa": 3.864
    },
    {
      "course_uid": "course_8c125c142820ece65c8b7610",
      "course_id": "MUSPERF 499",
      "title": "SENIOR RECITAL",
      "credits_min": 2,
      "credits_max": 2,
      "gpa": null
    },
    {
      "course_uid": "course_9daf3450f470632c3654c79c",
      "course_id": "MUSPERF 441",
      "title": "ADVANCED JAZZ STUDIO INSTRUCTION",
      "credits_min": 2,
      "credits_max": 4,
      "gpa": 4
    },
    {
      "course_uid": "course_a8a84582d1027669d873e0a8",
      "course_id": "MUSIC 567",
      "title": "ADVANCED ENSEMBLE-BRASS",
      "credits_min": 1,
      "credits_max": 1,
      "gpa": 4
    },
    {
      "course_uid": "course_a8df98d8511573954e202977",
      "course_id": "MUSPERF 421",
      "title": "ADVANCED TROMBONE",
      "credits_min": 2,
      "credits_max": 4,
      "gpa": 4
    },
    {
      "course_uid": "course_af54b48d3ae38fee9f784051",
      "course_id": "MUSPERF 146",
      "title": "MUSIC LESSONS FOR NON-MAJORS",
      "credits_min": 1,
      "credits_max": 2,
      "gpa": 4
    },
    {
      "course_uid": "course_b6eeebb09d2e6f442c96f66a",
      "course_id": "MUSPERF 521",
      "title": "MASTERS LEVEL-TROMBONE",
      "credits_min": 4,
      "credits_max": 4,
      "gpa": 4
    },
    {
      "course_uid": "course_e6b6c014f6277c4c47b9ea4d",
      "course_id": "MUSPERF 21",
      "title": "BRASS FUNDAMENTALS",
      "credits_min": 1,
      "credits_max": 1,
      "gpa": 3.866
    },
    {
      "course_uid": "course_ec0bdb01ba095e7e0f71c0db",
      "course_id": "MUSIC 798",
      "title": "SEMINAR-INSTRUMENTAL LITERATURE",
      "credits_min": 2,
      "credits_max": 2,
      "gpa": 3.818
    },
    {
      "course_uid": "course_f3d4774f1c0ead891b16fdc8",
      "course_id": "MUSPERF 241",
      "title": "ELEMENTARY/INTERMEDIATE JAZZ STUDIO INSTRUCTION",
      "credits_min": 2,
      "credits_max": 4,
      "gpa": 3.5
    }
  ],
  "revision": "e243353dcb7d79b7247ced91d69443ef4c2a6349",
  "instructor_url": "/instructors/MARK_HETZLER"
}