That doesn't sound normal. Ever highschool English class I ever heard of was an equal split writing and literature class. You read things and were expected to write as well. Not until university did I ever have a literature class where I wasn't expected to produce creative output of my own.
And no one said they don't write in the class. THe original post was complaining that they do not learn to write graphic novels
Which is normal. We don't tend to teach high school students how to write entire novels. We aren't really doing creative work at the high school level either: Most papers are research papers or talking about themes of novels the entire class read. Hardly creative stuff.
There is no reason a highschool English class shouldn't have students writing short stories or short 'graphic novels'. If they're just reading and not exercising their own creative processes then the class is a farce.
English classes aren't there for creativity - that's a secondary option.
English classes exist to help you process what others are communicating and to facilitate your communication with others. Most of this won't be creative endeavors, and the focus usually shys away from this stuff as kids get older. This is especially true with "advanced" and "AP" classes, which tend to model themselves after a more scholarly look at literature. There isn't much room for creativity there.
This doesn't make things a farce, but merely a different take than what you think you'd want for a fun class. IIRC, they offered a creative writing elective when I was in school. Anyone actually interested would take it, but in modern times, I'd guess students are more likely to get tips from places like NaNoWriMo - and all it takes if for a teacher to mention that once or twice for interested students to do it. For fun.
That's the norm for high school English courses.