One of the biggest challenges for primary school teachers in today's schools is to teach students to read. Moreover, this should be done based on each individual student's abilities and needs with regard to the diversity that exists in today's classes. This study aims to make visible what is the basis for teachers’ perceptions and behavior in individualized reading in teaching in Swedish as a second language. But it also seeks to identify possibilities and difficulties teachers face in connection with this to illustrate what may be the basis for teachers' equal / different views and actions in the field. This is illustrated by four research questions of the study, which are: 1) How do teacher individualize reading in teaching Swedish as a second language? 2) What considerations are the basis for the teachers in primary schools planning of individualized reading in teaching Swedish as a second language? 3) What opportunities and difficulties do teachers see within individualized reading in teaching Swedish as a second language? 4) How is individualized reading expressed in primary school teachers teaching in Swedish as a second language? Through qualitative interviews and observations, the results show that teachers use multiple individualization types and components of literacy development for the individualization of reading in their teaching in Swedish as a second language? Some of the teachers feel, however, that the structural conditions at the school prevents them from doing this fully. A central and common aspect is that teachers use level individualization as a basis for any kind of individualization.