No, most kids hope for the one and done. Conventional wisdom dictates you have much better odds applying ED or EA, so most students are putting a lot into that first app. yeh, they may start on those other ones due Jan 1, but most are waiting Dec 10 for that ED decision and hope not to have to submit more. A few kids after gaining admission to Harvard, Yale and Stanford might apply to one or two more just to see, but not 19 more. There’s something sinister about that.