This essay discusses the subjective observations and opinions on the Swedish concept of stegintegrering, a form of mixed grade education in the subject modern languages at upper secondary level. I interviewed two headmasters, four teachers and conducted an online survey with 39 pupils in order to find out what effects the concept of stegintegrering has on teaching and learning from a teacher and pupil perspective. Due to the extent of this essay no general conclusions can be made but certain connections could be found. For once there was a connection between group size and the possibility of teaching each group separately during one lesson per week and the attitude of the concerned teachers and pupils towards stegintegrering. While both headmasters and teachers claimed that the cooperation between pupils across all levels was the main purpose of stegintegrering as it helps their learning and understanding, my study showed that many pupils did not really want to cooperate and that teachers often find it hard to construct tasks that stimulate every group. None of the teachers that were interviewed for this essay went to a teacher’s training that focused on stegintegrering, which could be a reason for the result mentioned last.