The best that I can glean from the internet is that this girl was in a world history class and couldn't fill in the blank on a quiz about what Muslims believe. I seriously doubt that this was any attempt to impose anyone's beliefs on anyone else. I wish the course curriculum was available, but the Fourth Circuit apparently did review it. There is no information on what other faiths were studied in this class, Christianity, Judaism, Buddhism, Hinduism, Sikhism, etc.
It is a major mistake, which keeps being repeated over and over again, to confuse "promotion" of a certain idea, person, whatever, with a simple statement that such a thing exists and a person should have a certain level of familiarity with it as part of a well-rounded education.
It is ironic that some people complain about the "promotion" of a particular religion and then turn around and complain that their own particular religion is not being promoted.
The public-school system is being provided by the taxpayers as a gift to all children and parents, regardless of background or faith. It is ridiculous to expect that taxpayers then foot the bill as well for all of those who do not like what is being offered to them for free and demand their own alternatives.