John Rachlin is a Data Science professor at Northeastern University rated 4.63/5 on Rate My Professors by 52 students, with 2.7/5 RMP difficulty and 94% who would take them again (RateMyProfessors + Reddit, updated October 2026).
John Rachlin professor reviews and ratings: 4.63/5 from 52 RMP ratings at Northeastern (94% would take again). RateMyProfessor + Reddit.
SUPER CARING PROFESSOR! Big HW every week and you can work in groups or work individually. Attendance was part of your grade but it was chill since he is so wholesome :DDS4300 2026-06-16 14:04:26 +0000 UTC
He deeply cares about his students and truly wants to see us succeed. His last lecture of the semester was amazing, and he shared great insights on life, career, and purpose. It was an honor to be a part of his class!CS3200 2026-04-17 20:35:37 +0000 UTC
Professor Rachlin is an extremely caring and passionate professor who cares deeply about his students success and understanding. He is extremely flexible on his assignments and any other material which makes the class all the enjoyable. I would highly recommend to anybody taking DS classes to take Professor Rachlin.DS3500 2025-12-05 15:45:13 +0000 UTC
Beware goes on tangents that have NOTHING to do with the actual class and cares too much about ascetics than the actual functionality of the code. He is also prone to showing favoritism towards some students and can completely ignore others.DS2000 2024-06-21 00:30:13 +0000 UTC
Took an asynchronous, online course with him over the summer. Stupidly easy and he skipped like half the material because we didn't have time. Seems really passionate about what he does and like a great guy overall, but if you can, take CS1800 over the summer.CS1800 2023-05-03 15:46:04 +0000 UTC
Rude and disrespectful. Knows almost nothing about computer science. Avoid him at all costs.CS5200 2023-04-10 20:22:48 +0000 UTC
Rachlin is simply the best professor I have had at Northeastern. His class is perhaps a bit easy, but maybe a better word is just very fair. He is an understanding guy who wants you to understand and is always willing to help. I would strongly reccomend taking classes with Rachlin if you have the option.DS2500 2022-04-08 18:08:21 +0000 UTC
Easily the best professor I've ever had at Northeastern. Extremely caring and passionate about what he teaches. I wish he taught in-person but he's based outside of Boston unfortunately.DS4300 2026-04-16 21:29:36 +0000 UTC
He is incredibly caring and truly wishes each of his students the absolute best. In his last lecture of the semester, he shared amazing insights on life, career, and purpose. It was an honor to be a part of his class.CS3200 2026-04-17 20:32:36 +0000 UTC
Absolute gem of a professor. Is clearly very passionate not only in his field but also at teaching. Lectures do tend to run a little long but the stories are very interesting (if you listen). There were a few assignments over the semester but if you coded along with him in class they run very similar.DS3500 2025-12-05 15:44:30 +0000 UTC
awesome. could not be better. no clear so good. U need to put in timeDS2000 2024-04-27 00:11:42 +0000 UTC
Incredible Professor. Explained everything perfectly, and gave enough examples for us to solve any homework assignment. If this wasn't enough, he was very easy to reach outside of the class, and super nice about any questions we may have. Can't recommend enough!CS1800 2021-05-03 04:48:16 +0000 UTC
Prof. Rachlin single-handedly got me through Discrete Structures. Math is a challenge for me and he did everything in his power to make sure that I got through his class with a clear understanding of the material. He genuinely cares for his students, and makes himself available to help them outside of even his office hours. Highly recommend.CS5200 2021-12-20 15:08:11 +0000 UTC
Awesome professor! If you get a chance to take Rachlin, take him. You will have an amazing time and also make sure you go to his office hours. He is incredibly helpful and a nice guy.DS2500 2021-12-15 03:25:49 +0000 UTC
Rachlin cares a lot about data science and it really shows. That being said, he sometimes forgets that students don't have the same expertise that he does and launches into things that students are not prepared for. The lectures often had little to do with the actual HW assignment material and could often be zoned out in.DS4300 2023-06-28 01:48:00 +0000 UTC
John Rachlin is rated 4.63/5 on Rate My Professors from 52 ratings. 94% of RMP reviewers said they would take them again.
John Rachlin's classes have a difficulty rating of 2.7/5 on Rate My Professors.
John Rachlin has taught CS3200, CS1700, DS4300, DS3500, DS4973, DS2000, DS2001, CS5200 and 7 more at Northeastern.
John Rachlin has received: Khoury Teacher of the Year, Khoury College (2020).
Data updated October 2026.