The current study aims at exploring the common means that may improve organizational effectiveness by focusing on two main facets of organizational qualities: teacher commitment and job satisfaction. Data were collected from 841 randomly sampled teachers employed in 118 elementary schools in Israel. A quantitative questionnaire, which included scales measuring organizational and professional commitment, extrinsic and intrinsic satisfaction and organizational and job-related characteristics, was employed. Multiple regression analyses revealed that the single variable that predicted both types of commitment (organizational and professional) and both types of satisfaction (intrinsic and extrinsic) was teachers' perceptions of the fit between one's job demands and abilities. The second most influential predictor was principals' interaction with the teachers. Job-related characteristics had the least impact on teacher's professional commitment and extrinsic satisfaction. The finding, that perceived job fit predicted both commitment and job satisfaction, reinforces the importance of the assumption about the significance of best practice in recruitment and placement processes, which has long been known to be significant in determining professional conduct. Other implications of the findings are discussed, and recommendations are provided to school principals.