This report describes a research study designed to adopt a predominantly quantitative approach to investigating three related aspects of oral fluency: fluency improvement, correlation between subjective judgments and objective counts, and variation of fluency in different speech interactions. Subjects were 15 English as a foreign language (EFL) secondary school teachers before and after a 20-week, full-time, in-service course. Variables measured were pruned words per minute, number of filled pauses per T unit, and percentage of T units followed by a pause as suggested by P. Lennon (1990). Fluency under two different speech contexts was also observed. Findings confirm that the three quantitative parameters were not sufficient to track progress in oral fluency that may have reached a ceiling effect, that speech rate was a powerful predictor for verbal fluency and is possibly a core component of fluency, and that speech rate did vary in the reporting and interview tasks. (Contains 12 references and 3 tables) (Author/NAV)