I disagree with the other comments saying his lectures were unclear and the tests unfair. Professor Nurbekyan was extremely helpful and gave a great understanding of the class material, and I felt fully prepared for the tests. It is however important to go to section because that's where much of the test/HW expectations are discussed. The TA at the time (Steven) was very helpful and explicitly told us what standard our proofs would be held to.

As some of the other commenters discussed, he gave up to 20/15 on the homeworks which was a great buffer for a pretty tricky class. The midterms and final were tricky and a bit of a time crunch but doable and pretty similar to the homeworks. Overall, he's a great professor and I would take his class again.

He's a pretty confusing lecturer so it's kind of hard to follow what he's saying but I go to his office hour regularly and it helps tremendously. He is quite helpful and concerned with how you're doing as long as you ask questions. His midterms are medium difficulty and has around 70-80% averages. If it wasn't for the max(midterm1, midterm2), I definitely wouldn't have gotten an A. His final is hard af but that's probably cause of COVID-19 which forces everyone to do take home tests. It took me around 7-8 hours to finish his supposedly 3 hour take home tests with the same averages as midterms. Highly recommend overall although you should supplement his lectures with office hours.

I have to disagree with the comment before mine. Dr. Levon is great and gives out a lot of extra credit. His lecture style is way more engaging and coherent than my 115A's prof, and he also gives a lot of office hours as well. Be sure to do more questions in the book and ask as many questions as possible in the review sections. I bombed very bad on the first midterm, but thanks to his leniency in grading you see my grade now. Overall, I would recommend everyone to take him PROVIDED that you go to office hours regularly and ask questions frequently even if it seems to be basic. I ask a lot of obvious questions in class and sound stupid at times, but they will help you later on.

I consistently scores 20/15 on homework, which meant answers 100% correct plus extra credit for neat, clear work. However the exams were graded on a completely different standard - answers which would have been worth full credit on homework were given half credit or less due to the professor's insanely strict expectations for what a proof is WHICH HE NEVER EVEN MENTIONED IN CLASS. This guy is terrible, his class is a trap for people unable to read his mind. Unless you have the answer key while you're taking the test, you're screwed.