Think of sexually evocative bumping and grinding to bass-heavy hip-hop tunes. Think of lap dancing, standing up. That's "freak dancing," a trend among high schoolers nationwide for more than a half-decade that Seattle Public Schools is now not only taking notice of but trying to stop. Steve Wilson, the Seattle district's chief academic officer, said at a community meeting at Roosevelt High School Tuesday night that the district was setting a new policy after incidents at Roosevelt and other high schools in which parents had written to complain and students had been disciplined for freak dancing. Parents and school administrators...