This is a very doable classes. The key to success is to make sure you show up everyclass, and complete all his study questions before his exams.
There are not too many workload, and all exams are open books which means that you can even print his study questions out since many exams questions are taken directly from the practice questions(maybe changing some number or some wording, but same idea).
Professor is very clear and as an international student with weak English skills, I am able to follow his lecture without any confusion. Gradings are 25% midterm1, 25% midterm 2 and 50% finals. His office hour is helpful as well.
The content is interesting for me, I would absolutely want to take his class again.

The "theory" part of the title is accurate - not many case studies like some other upper divisions, think Econ 1 and Econ 2 type graphs and theory.

Has a different style of teaching and tests which takes the first midterm to get used to. Listening to his lectures is the best way to study, not reviewing notes. He is a good teacher that clearly understands everything he is saying extremely well. Questions will be answered thoroughly. He explained some basic econ 1/2 concepts better than I had ever heard before.

Very unorganized lecture notes. Tests are NOT math-based plug and chug type but more concept based with free writing response sections where you are expected to copy down graphs and explain.

McDevitt is not a super engaging teacher (though I thought he was adorably funny when he made jokes) but he is super clear on everything. You can literally follow his 10 year old lecture notes through class and he hits on everything. The class is tough, you will need to study and understand each model thoroughly, but he does go over EVERYTHING you need to know in class. Once I understood that (2nd midterm) I did very well on the tests and ended up getting a B after a terrible first midterm score

Mcdevitt is incredibly straight forward in his lectures and his tests. he also posts all of his lecture notes online before lecture. If you pay attention in lecture and work on the problem and midterm reviews he posts online you should be good. He posts all of these resources at the beginning of the quarter so there isn't really an excuse for you to not work on them.

Get a head start, sometimes the material is a little hard to grasp simply because of the theories.

Took Econ 121 (International Trade Theory) with McDevitt in Fall 2015. Class structure was 25% midterm 1, 25% midterm 2, 50% final.

McDevitt is a decent lecturer. He writes everything down on the board, and is pretty clear and organized. It is weird how his materials (study questions, lecture notes) on CCLE are really unorganized and poorly formatted though. That may hamper revision, but should not be a huge obstacle.

Tests are fair, if you understand the material and are able to do the study questions you should do fine. His multiple choice questions can be intimidating, as he has many options.

Grading was an issue though. I had no idea where I lost my marks, and how I lost my marks, as the graders barely indicated anything. Also, the mark allocation for the test questions was not always given, which can be frustrating. I am not sure how the curve is like, and the distribution is never given. He seems to curve the mean to a B- though.

Great professor, The material is very easy, but you basically need to memorize them all.
Mid-term1: C
Mid-term1: A
Final: A-
Overall B+
I regret that I didn't pay some effort earlier. Make sure you remember or the notes and graphs and you will end up with a A.