Interest in biology and the out-of-school experiences of Finnish secondary school pupils (n=3626, median age 15) were surveyed in the spring of 2003 using the international ROSE questionnaire. Likert-scaled items were categorised with an explorative factor analysis. The scores of eight interest-context factors and seven out-of-school experience factors were studied. More boys than girls were interested in basic processes in biology, whilst more girls than boys found human biology and health education interesting. Out-of-school nature experiences were the most important factor correlating with interest in biology. Out-of-school experiences in science and technology-related activities, such as using science kits and constructing models, had the highest correlation with an interest in basic processes in biology, such as ecology, cell biology and genetics. Out-of-school experiences of caring for farm animals correlated with an interest in applied biology, such as agriculture. Experiences linked to design and technology, or information technology, were the least important factors to correlate with any studied interest contexts. Thus to enhance pupils' interest in learning more about biology and the living environment in general, it is important to put more emphasis on pupils' out-of-school nature experience and their engagement in informal learning in contextual outdoor environments.

We present teacher–researcher partnership (TRP) as a way of fostering teachers’ professional learning. Teachers’ participation as research group members is an essential aspect of the partnership. Teachers and researchers share the same goal, which is to improve their understanding of and enhance students’ engagement in science. Project-based learning (PBL) was selected as a means of enhancing student engagement. The activities of the partnership focused on the co-design and enactment of and co-reflection on PBL units. Teachers participated in the design of the data collection process and the interpretation of initial findings. As an indicator of teachers’ professional learning, we examined students’ engagement during different implementations of the PBL units. Student engagement was measured using a situational experience sampling questionnaire delivered via mobile phones. The students’ experiences of scientific practices and engagement in actual learning situations were measured in the first and second years of the teachers’ implementation of the teaching units. An analysis of the students’ responses showed that the students were 20% more engaged in the second year than in the first year. We argue that TRP has the potential to enhance teachers’ professional learning.