Introduction. The spirometry is a simple and noninvasive test to assess lung function. Obtaining a spirometry of quality requires training, appropriate technical conditions (calibration, maintenance and location of the device), and patient cooperation. Several studies have found professional training deficits related to a high turnover in the same place, the lack of systematic training when new professionals performing spirometry are incorporated and the lack of competences' periodic evaluation. Materials and methods. The Master Plan for respiratory diseases (PDMAR) has designed a minimum practical/theoretical training program (16 hours) based on the training program of the National Institute for Occupational Safety and Health and the European Respiratory Society initiatives. In 2010, 13 courses have been offered to 307 professionals. Results. The differences observed between the initial assessment and post evaluation knowledge was statistically significant (p < 0.001). Conclusions. Training must be organized in a decentralized and territorial basis in order to ensure access for all professionals performing spirometry. Moreover, a spirometry of quality will only be achieved when all key components are integrated (training, technical aspects and interpretation) which requires interoperability between different levels of care.