The purpose of the study is to study teachers' perceptions of what happens when children crack the reading code and how teachers can support the process and the conditions that exist. My study is based on qualitative focus group interviews. I have done three focus group interviews at two different public schools. The result shows that the well-known concept of "cracking the reading code" is not easy to understand. Teachers have different ideas about what is covered by the term. The result also shows that teachers have different prerequisites for being able to support the process in the best possible way. The reduction of teachers in the classes has led to that time for the students who may not yet have started reading is missing out on important resource hours. Time is another thing that emerged in the result as an obstacle. Large classes and greater requirements for goal fulfilment prevails in Swedish school today.