No bad, but it still needs to be taught to keep to the right. Unless this is how people normally drive in the US ?
In my experience, American driver ed doesn't cover this much at all, at least when I learned (the late 1990s). There are a lot of people who think "I'm going exactly the speed limit" means they should hang out in the "fast" lane.
What you're taught in driver ed means nothing after a little time on the road dealing with the norms of other drivers and the inconveniences they impose on you. Nobody wants to be inconvenienced any more, even if it's the "right thing" to do.
Some what related, I feel I notice in last 10-20 years people absolutely refuse to miss their turn/exit. They will create a very dangerous situation swerving across lanes and cutting people off at the last second rather than saying "oh dang, I will need to do a U-turn ahead".
Another example I notice is, the use of a turn signal is an expectation of the right to change lanes. People actually get angry with thoughts like "I put on my turn signal, everyone else should slam on their brakes so I can change lanes because I need to turn now!"