Teachers may also choose to move a dancer up a level. Once a dancer has met the requirements to move up a level they are no longer allowed to compete at the lower level of competition, however in the UK if a dancer in the open level has not placed in the top 5 for a period of more than a year, they may return to the intermediate level of competition. Competitions for each individual dance are scored on a 100-point system, which indicate the subjective opinion of each different judge. Most scores seem to be in the 60–95 point range, and can vary wildly depending upon the judge. However, each competition is judged in its entirety by the same judge(s), so what really matters is the relative placing of each dancer. Placing of dancers For Individual dance competitions, placing is based entirely on a single judges subjective opinion. Ties are common, and can result in slightly skewed final results. For instance, a tie at 2nd place would result in the 4th best dancer receiving 3rd place (1st, 2nd, 2nd, 3rd, instead of 1st, 2nd, 2nd, 4th). Preliminary and Open Championship competitions are judged by at least 3 adjudicators (Judges) and at regional, national and world "Oireachtas" competitions, there can be 5 or more. Because of the subjective nature of judging, the varying scales used by each judge, and fact that the scores of 3 dances must be combined to determine overall placing, an additional [Irish Points] method of scoring is used. Each individual adjudicator derives from their own scoring, a final placing. Ties in these placings are discouraged but do happen. Each of the placings from 1st to 50th are assigned an Irish Point Value, which when combined with the other adjudicators, determines final placing. The Irish Points per individually judged place are vaguely logarithmic, in that 1st == 100 points, 2nd == 75, 3rd == 65 etc., until 50th == 1. This gives higher marks by single judges more weight than average marks by more judges. Complete List of Irish Points:  In a 3 judge competition it is almost impossible to Not get first with 2 judges agreeing that 1st place is warranted, since with 200 Irish points, the 3rd judge would need to place a dance 7th or worse to overcome the 25 point bonus between 1st and 2nd. This scoring method helps ensure that a single bad adjudicator does not unfairly ruin the results.