PURPOSE: the present research aims at assessing the effects of a Vocal Functional Exercise Program the Stemple and Gerdeman applied to teachers of the Elementary School Education level in the municipality of Niteroi/Brazil, with or without voice alterations. METHODS: the set of subjects consists of 17 female teachers who spontaneously agreed to participate from the initial group of 222 invited teachers. This is the exercise program that was applied: sustained vowel /i/, ascending and descending gliding on the word /nol/, and musical scale tones Do Re Mi Fa Sol - issuing the /ol/ for a maximum time of phonation. The exercise program was evaluated by means of the following tools: the video examination - laryngeal endoscopy; the vocal quality (RASAT scale) and fundamental frequency variability both by means of spontaneous speech; acoustics analysis (intensity - phonation deviation diagram and spectrogram) from the Vox Metria Program, pre and post program application making use of the sustained /ε/ vowel. RESULTS: the results reveal that the teachers presented an increase in the phonation duration, in its intensity, in the greater amount of harmonics and voice extension, therefore, improving their vocal quality, resistance and project. CONCLUSION: the effects of a Vocal Functional Exercise Program the Stemple and Gerdeman applied to teachers enhancing their professional performance, benefits which were then extended to the social ground level.