But the pretend Fu Manchu mustaches were just one component of the school's pep rally.
At about 10 a.m., students, kindergarten through second grade, lined up, sang the Ravens fight song, chanted and cheered. Another rally with the older children was planned for the afternoon.
Fourth-grade teacher Michelle Manley, wearing a purple gown ("the only bridesmaid dress I've worn again," she said) and a feather boa, led the children through cheers she usually performs on the morning announcements.
Principal Christine Smith and Assistant Principal Christine Davis joined in with the kids.
"We have true Ravens spirit at the school and in this community," Smith said.
At the end, physical education teacher Jayne Donohoe assigned the children homework: "Watch the Ravens beat New England," she said.
How do you show Ravens spirit? Tell us in the comments.