If general support is concluded to be insufficient, a pedagogicalassessment is conducted in multiprofessional collaboration (Vainikainen,Thuneberg, Greiff, & Hautamäki, 2015). According to the assessment, anindividual learning plan is created and tier 2 intensified support is organized.Intensified support consists largely of the same means as general support,but the intensity increases and multiple types of interventions are typicallyimplemented simultaneously. Even though regulating class size is notofficially tied to the support system, it seems to be common to placestudents with this kind of milder support needs in slightly smaller classesso that they can receive more attention from the pedagogical staff.When intensified support fails to provide sufficient support for thestudent, a pedagogical evaluation is conducted in multiprofessionalcollaboration and an individual education plan is done accordingly.Tier 3 always requires the official decision and only at tier 3 level fulltime special education can be provided and a student can more or lesspermanently be placed in a clearly smaller special education class. Oneaim of the present study is to deepen the understanding of how classsize and intensity of support are related during tier 2 and tier 3 supportand to analyze whether these students benefit from studying in smallerclasses.