The Clark County (Nev.) School District has told families at 29 elementary schools that students will remain on the traditional nine-month schedule in 2014-15 and not switch to year-round classes. The Las Vegas Review-Journal says that at 39 other elementary campuses, the district still may adopt year-round calendars because of student enrollment that exceeds capacity. Clark County officials had warned patrons in the fall that crowding at the elementary level might force the district to turn to an extended calendar. According to a head count on Nov. 18, enrollment in the district's 217 elementary schools, on average, is 13 percent over the capacity of permanent facilities. That space already is being supplemented with 1,282 portable classrooms at elementary schools.