In the 2006–2007 season, Halverson made her junior debut. She won two bronze medals on the ISU Junior Grand Prix circuit and was second alternate to the 2006–2007 Junior Grand Prix Final. She went on to the 2007 Nationals and won the junior title. Halverson was the first men's skater since Evan Lysacek to win back-to-back novice and junior national titles and is one of only nine skaters to do it since 1932. Her placement at nationals earned her a trip to the 2007 World Junior Figure Skating Championships, where she placed 10th. Until Junior Worlds, Halverson had never placed off the podium in a major event in her career.