“…However, these differences detected are not in line with previous research showing a consistently higher valuation by teachers than by students. Thus, research conducted in USA (Moos, 1979), Israel (Hofstein & Lazarowitz, 1986;Raviv, Raviv & Reisel, 1990), the Netherlands (Wubbels, Berkelmans & Hooumayer, 1991), Australia (Fraser, 1982(Fraser, , 1986, and Spain (Suárez, Pías, Membiela & Dapía, 1998) showed how teachers saw the classroom environment in a more favorable light than their students, and in those cases where the magnitude of this difference is appreciable this can give the teacher a stimulus for change. In our case, the students' perceptions indicate a better assessment as regards the material environment and the integration of activities carried out in the laboratory with the other science classes, while the teacher makes a better assessment of the openness of the practical activities and the clarity of the rules established to work in the science lab.…”