Whoever rates Lewis under a 3, didn't work hard enough. He gives you the tools, you have to learn how to use them. I took 109A with him, got a B- & I thought I put in a lottt of work. Compared to my work ethic in 109B, it doesn't compare. He cares a lot and his curves are generous. DO ALL THE READINGs & PRACTICE PROBLEMS. Ochem can be fun, trust.

Best CHEM prof I have ever had. He teaches so well and you can tell he really cares about his students. The exams are pretty straightforward if you keep up with the lectures and do his practice exams. He's really open to talking during his office hours and had no problem discussing how his curve worked and individual grades privately.

Robert Lewis is seriously one of the best professors here and he really cares about his students. The bad reviews from his class are from those who either got a bad grade or simply didn't put enough time. Organic chemistry is hard in itself, but Lewis' exams/quizzes were always fair. Nothing was unexpected on the exams and do book problems!

DUDE HOW DOES HE HAVE A 5/5 literally has been off his sh*t these past two quarters:(

Take him if you will get a C in the class because youll prob be curved up to a B. However if you have a good raw grade, it does not get curved up the same amount as kids with worse grades.

Prof. Lewis is an amazing professor and truly cares about his students. He is extremely accommodating and is available outside of class whenever you email him. 109B is really tough, but he does explain the topics well. The key to doing well is learning mechanisms and MEMORIZING REACTANTS!!!! Doing that will at least get you a passing grade.

Excellent lecturer and speaker in general, the material is really hard but Lewis teaches it as simply and clearly as he can and does an amazing job. Love him!

Easily one of the best professors at this school. You can tell he really cares about his students and that he's truly passionate as a teacher. He's understanding, accommodating, and an all-around amazing professor. I highly recommend taking this professor for Ochem. For such a brutally difficult subject, Dr. Lewis makes it bearable and actually fun

Goat, highly recommend for ochem. He was very accommodating during the pandemic and even tho ochem was easier online than in-person, if you do book problems and keep up with the readings you'll do good in the class. His lectures are helpful and held discussions sessions where he'd go over material that was in the weekly quizzes. Really nice guy!

One of the best professors I've ever had. He readily admits mistakes and regrades quizzes/awards points when he messes up, and answers every email quickly. He even made time to go over a quiz with me over zoom fall quarter. Genuinely cares about his students, and even though the class is hard, he makes it bearable. If you can take his class, DO IT!

Professor Lewis has a great class set up and you can tell he wants you to learn! Homework is graded which gives grades a boost!

Lewis is such a genuine and caring professor, I really think he wants his students to thrive. Tough quizzes but he makes a brutal subject bearable! Don't be afraid to reach out to him for anything, he's so generous with his time and very patient

Taking this series with Lewis has been great! He is extremely understanding/caring for his students, even though the material is tough. Harder than 109A in my opinion, but doable with Lewis. Course grade made up by biweekly quizzes, biweekly mechanism uploads via gradescope, mastering chem, bacon, reflective essays, and final quiz.

The most caring genuine professor UCSB has to offer. He is considerate and understanding. He cares about his students and being a good professor to an extent I've never seen before. He is so hard working to ensure he thoroughly answers every question. Unlike most profs, he wants to actually connect and bond with his students. VERY approachable.

Lewis is a true gem. His tests can be pretty hard, but he's super straight forward in what he wants you to learn and what you can expect to be on the test. He also gives you the opportunity to get your test regraded if you missed points unfairly, and he gives extra credit. He's also funny and really made THICCPEPTIDE an answer to a quiz question

I LOVE HIM. Go to lecture, skim the textbook, do hw problems, attend CLAS aka put in the work and youll succeed. Hes so organized and lays out everything you need to do to succeed. There is some extra credit. Though he doesnt do a massive curve like Aue, the homework and clicker questions will bring your test scores up indefinitely. Very funny 2

Lewis is one of the best profs I've had, cares a lot about his students and always available to help by e-mail or office hours. Very approachable and kind. His tests can be tough but they're always fair. He doesn't try to trick you he just wants you to understand the material. Would 100% recommend him.

109B is challenging! Personally, I wouldn't take Lewis again. He is nice, extremely organized. He goes through each mechanisms so fast and expect you to have to do the application yourself. He doesn't explain, make relations between the mechanisms that help you understand. He is not engaging; his voice is monotone. Not the best lecturer. Nice guy

Professor Lewis is one of the best lecturers I've had at UCSB thus far. He is really engaging and generally cares that students excel in such a difficult subject. Go to his office hours he is very straightforward and easy to talk to. Really changed my perspective of OCHEM and he uses a lot of memes while lecturing and real world applications.

He's the sweetest professor ever. He genuinely cares about his students. He's so fair and reasonable. Ochem is hard no matter who you take but at least a good professor makes it less depressing. You'll pass with a good grade with professor like as long as you put in the work. He's so precious wish I could take him for 109c also.

Best professor! I went from failing 109A with Bruice to A's with Lewis for 109A & 109B. He cares so much for his students, makes time for them, and is very easy to approach. His exams are tough, but he gives as much partial credit as he can. Attending CLAS, office hours, and actually reading the textbook and doing the problems will get you far.

Clearly cares about his students. Continuously assigns chapters to do at home that he can't get to in class. Teaching is straight out of the textbook and attendance is required so prepare to waste a lot of time in class. Book problems are somewhat helpful but there are discrepancies between the book and his tests

Cool guy, tests are always hard but that's OCHEM. Really fun to talk to during office hours

Dr. Lewis was a great organic chemistry lecturer -- he walked through reaction mechanisms on the chalkboard in addition to displaying useful notes in his PowerPoint slides, and asked occasional iClicker questions to drum up student participation and gauge where the class was at. His exams were fair, but are subject to change as Dr. Lewis is new.