Current instructor

Christopher Zahasky

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

Raw average: 5.00/5 from 1 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

ENVIRST/GEOSCI 411
Quality 5/5Difficulty 2/5
Professor Zahasky is a great guy and a very interesting professor. The class is fairly easy (1 presentation for most of the grade and weekly quizzes). He's super passionate about what he teaches which makes lectures very worthwhile.
Rate My Professors ↗

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

Classes with Christopher Zahasky

GEOSCI 691

Senior Thesis

3–4 credits

GEOSCI 691 is a mentored individual research course for students completing a senior thesis.

Offering recorded · Fall 2026

Shanan PetersClay Kelly+11 more

No recorded grade history

GEOSCI 699

Directed Study

1–6 credits

GEOSCI 699 is a directed study course allowing students to conduct independent research or study arranged with a faculty member.

Offering recorded · Fall 2026

Shanan PetersClay Kelly+15 more

historical GPA · grades

Spring 2022–Spring 2022 · limited sample
GEOSCI 990

Research

1–12 credits

GEOSCI 990 is a research course where students conduct supervised independent study projects.

Offering recorded · Fall 2026

Stephen MeyersShanan Peters+20 more

No recorded grade history

Recorded teaching history

Explore courses taught by this instructor →
Browse recorded courses
TermCourseTitle
Fall 2026GEOSCI 681Senior Honors Thesis
Fall 2026GEOSCI 691Senior Thesis
Fall 2026GEOSCI 698Directed Study
Fall 2026GEOSCI 699Directed Study
Fall 2026GEOSCI 990Research

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

Instructor identity & provenance 
{
  "instructor_uid": "instructor_379a41beb46ff0ec7b085fd8",
  "source": "enrollment",
  "source_instructor_id": "czahasky",
  "identity_basis": "netid",
  "identity_status": "source_identified",
  "name": "Christopher Zahasky",
  "email": "CZAHASKY@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": 1,
    "quality": 5,
    "difficulty": 2,
    "quality_count": 1,
    "difficulty_count": 1,
    "profile_id": "rmp:3007768",
    "source_url": "https://www.ratemyprofessors.com/professor/3007768",
    "match_basis": "exact_name",
    "observed_at": "2026-09-07 16:46:50.646017+00:00",
    "courses": {
      "course_03ba942cade6b93c46886496": {
        "review_count": 1,
        "quality": 5,
        "difficulty": 2,
        "quality_count": 1,
        "difficulty_count": 1
      }
    },
    "bayesian_quality": 3.7235102700443767,
    "prior_mean": 3.6596857835465957,
    "prior_weight": 20
  },
  "current": true,
  "courses": [
    {
      "course_uid": "course_55a3719a9378ba3e5ac8d303",
      "course_id": "GEOSCI 990",
      "title": "RESEARCH",
      "credits_min": 1,
      "credits_max": 12,
      "gpa": null
    },
    {
      "course_uid": "course_617ebf59f094134ce70bbaa4",
      "course_id": "GEOSCI 698",
      "title": "DIRECTED STUDY",
      "credits_min": 1,
      "credits_max": 6,
      "gpa": null
    },
    {
      "course_uid": "course_635799e37c4c767ad1e7f18c",
      "course_id": "GEOSCI 691",
      "title": "SENIOR THESIS",
      "credits_min": 3,
      "credits_max": 4,
      "gpa": null
    },
    {
      "course_uid": "course_db4ff19cdc2ed27d049c0404",
      "course_id": "GEOSCI 699",
      "title": "DIRECTED STUDY",
      "credits_min": 1,
      "credits_max": 6,
      "gpa": 3.75
    },
    {
      "course_uid": "course_e7279f824ab6b8b042a08bff",
      "course_id": "GEOSCI 681",
      "title": "SENIOR HONORS THESIS",
      "credits_min": 3,
      "credits_max": 3,
      "gpa": null
    }
  ],
  "revision": "e243353dcb7d79b7247ced91d69443ef4c2a6349",
  "instructor_url": "/instructors/CHRISTOPHER_ZAHASKY"
}