In any chess tournament, more than one player can end up with the same score. In the case of tournaments with money-prizes, the prize money is divided evenly between participants who have tied. Trophies cannot be divided. Therefore, we use various tie-break systems to determine places, though all players in that grouping can rightfully say they tied for x-place. Tie-break systems used locally include: Modified Median, Solkoff, Cumulative, & CumOp.
Sonneborg-Berger is the primary tie-break used by ChessKid.com.