The Test of Spoken English (TSE) is an internationally administered instrument for assessing nonnative speakers' proficiency in speaking English. The research foundation of the TSE examination described in its manual refers to two sources of variation other than the achievement being measured: interrater reliability and internal consistency. Because the reported data were drawn from a 1980 study of the reliabilities based on two raters, newer data and more extensive analyses were needed. This study uses data from recent administrations of the TSE examination. Analysis of variance examined the effects of scale, section, examinee, and rater, as well as the interactions of these factors. Reliabilities were reported for item, section, and scale scores. Common and unique variance estimates were developed for each scale score for which a section was rated. Estimates of the effects of altering section lengths suggested that some sections should be lengthened and others omitted if reliability were to be maximized. Others suggestions are offered for improving reliability. Thirteen tables present study findings. An appendix describes TSE scale points. (Contains 16 references.) (SLD)