Candidates who experience extraordinary disturbances or distractions related to the administration of a National Board examination that may have detrimentally and materially affected performance should inform the National Board in writing. Candidates are encouraged to submit such a letter within ten days following the test administration to facilitate an investigation of the disruption by the National Board. The letter should detail the nature and ramifications of the occurrence. Candidates who later wish to appeal their test results on the basis of the reported disruption must submit a separate letter of appeal; the letter of appeal may refer to the prior letter detailing the reported disruption. The section on Appeals contains guidelines for filing an appeal.