Everyone’s experience at Harvard no matter what concentration one chooses is different. That being said, everyone’s experience as a computer science concentrator is also different. I will be sharing a bit about my experience as a computer science concentrator. 

I originally did not enter Harvard as a Computer Science Concentrator, and I first thought about coding after taking Statistics 100 - Introduction to Statistics and Data Science where I learned R. The following semester I took Computer Science 32 - Computational Thinking and Problem Solving, where I coded in Python and learned that I actually do not mind coding and can see this being applied in any career I pursue as technology continues to advance. 

I would say that computer science at Harvard is more theory where there is a larger focus and more classes offered on learning about different algorithms and logic and not as much coding. In these classes, you are doing a lot of proof. Some of the classes I took that were proof-heavy included CS 20 - Discrete Mathematics for Computer Science, CS 120 - Introduction to Algorithms and their Limitations, and CS 121 - Introduction to Theoretical Computer Science. 

Some of the coding-heavy classes include CS 32, as I mentioned earlier, CS 51 Abstraction and Design in Computation where you learn OCaml, and CS 61 - Systems Programming and Machine Organization, where you learn in C++. 

Overall, the classes are difficult and it is definitely necessary to go to office hours and have problem-set groups. But, you learn a lot from taking these classes and they are all connected in some way.