Historical instructor

Tehshik Yoon

Adjusted rating
RMP difficulty
captured reviews
About this rating

Raw average: 4.91/5 from 65 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

CHEM 345
Quality 5/5Difficulty 4/5
Professor Yoon is one of the best professors I have ever had. He is an incredibly passionate, bright person who managed to make a notoriously difficult class into one of my favorites. He is very active on piazza and gives lots of opportunities for practice which is super important for a course like this. I wish every prof was like him.
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CHEM 345
Quality 5/5Difficulty 4/5
I wish Tehshik ran the entire undergrad chemistry department! He is a clear communicator, empathetic to the student experience, and makes the course accessible and fair. He points out areas of organic chemistry that are relevant to life and other science disciplines.
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CHEM 345
Quality 5/5Difficulty 4/5
TPY has been my favorite professor thus far at UW. He was always very clear on what he expected us to know, gave great problem sets, and genuinely cared about his students. Yes, the content was very difficult, but he never downplayed the difficulty and prepared us accordingly for it.
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CHEM 345
Quality 5/5Difficulty 4/5
TPY is by far my favorite professor I've ever had at UW-Madison. He is clearly very passionate in what he teaches, and made me excited to come to an ochem lecture (unthinkable, right?). He is very intelligent and explains everything super clearly. I would recommend him to anyone taking chem 345, though I believe he only teaches in the fall :(.
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CHEM 345
Quality 5/5Difficulty 4/5
He has so much passion for whatever he is teaching. I don't know how there could be a better professor for Ochem 345! I hope to have him again for future classes.
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CHEM 345
Quality 5/5Difficulty 3/5
Professor Yoon is arguably THE best chemistry professor at UW-Madison. He made organic chemistry interesting and engaging. He also was extremely down to earth and sweet. His grading criteria is very fair and never out of the ordinary. He provides lots of practice problems, which are crucial to performing well in the course.
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Personal experiences, not a representative survey. Profile matching and captured coverage are shown in the source details.

Classes with Tehshik Yoon

No teaching recorded in Fall 2026.

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Recorded teaching history

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

Instructor identity & provenance
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