This graduate thesis was done at the Department of Natural Sciences at Faculty of education in Osijek, subject of Nature and Science under guidance of mentor Irella Bogut, Assoc.Prof., D.Sc. and co-mentor Željko Popović, M.Sc., College Prof. The aim of this study is to investigate whether pupils with special educational needs achieve better results in research - outdoor science teaching than in regular teaching in the classroom. The survey was conducted in March and April 2015 with anonymous questionnaire which consists of 17 questions of which 2 were closed. The study included 16 teachers from Josip Matoš Primary School in Vukovar and Antun Gustav Matoš Primary School in Vinkovci. The results showed that pupils with special educational needs achieve better results in research - based outdoor science teaching compared with regular teaching in the classroom and all teachers agreed with this statement. 25% of teachers believe that this kind of teaching is very useful for pupils with special educational needs. Teachers mostly apply method of conversation (16%) in research - based outdoor science teaching, but 69% of them believe that practical work method is the most effective method. Although teachers are aware of benefits of research - based outdoor science teaching, still 12% of them think that it is not enforced often enough in their work. 94% of teachers believe that all pupils with special educational needs can participate in research - based outdoor science teaching but they need individualization of access.