Well yes, but curious what book you would recommend instead for graduate electrodynamics? Note that she already recommends first studying Griffith's Introduction to Electrodynamics at the undergraduate level (and that one is a true pleasure to read imho).
I'm happy that many professors start to use Zangwill's Modern Electrodynamics [1] textbook. It seems more focused on explaining things and don't assume that you know too much (which you usually have no idea if you should have known something or you just an idiot) like Jackson.
From what I've heard, the value of Jackson is not the EM you'll learn, but the mathematical techniques you'll learn, which are widely applicable beyond EM.
