Professor Radko does care a lot about her students and how they learn. She will explain the concepts clearly to help you understand them. Taking her for my first quarter at UCLA was definitely helpful. Her exams can be a little difficult but it is not difficult to do well in her class. She is a very fast grader. I got my first midterm score back in less than 24 hours. I regret not attending her office hours more often but she will definitely help you. I highly recommend that you take a class with her if you can.

She's an excellent professor. She isn't that hard to understand with her accent. Her midterms were difficult but she never tries to trick you or pull a fast one. She makes sure that you understand the concepts inside and out.

She's not easy by any means, but she'll definitely make sure you learn calculus.

Professor Radko is really nice and she's one of those teachers who actually care about her students. I'm glad I got her in my first quarter here at UCLA. You can email her and she will reply you in such a short time. Her accent is not a problem at all because I guarantee you that hers is a lot better than some of the professors I had.
I like her lectures because she writes really neat notes and teaches according to the book and so it's easy to turn back to the book and review the exams. Also she makes sure to teach you step by step so that you can understand all the basic. However, this becomes a problem to her exams because you really need to go to a higher level
Also, BEWARE: Her midterms/exams are not what you will expect because one questions will compile of many types of math and ALSO, THERE ARE A LOT OF TWISTS in her questions. In order to get an A you really need to learn how to solve those types of twists and know your materials well.
My advice for you (as well as what I regretted I didn't do):
1/ABSOLUTELY read the book BEFORE the lecture. This will help you form questions when she explains the new stuff and not lose her reasoning when you have to take note and listening to her proof at the same time.
2/ DO A LOT OF extra homework. Unless you are really smart like some of my friends and can get by with her assigned homework alone, I bravo you. but for me in order to get used to the material, i do all the odd problem homework and check the result in the back. this helps me know the material inside out.
3/Go to her office hours for help. Even though you will see A LOT of kids there, at least you will get help.