The governance of Finland’s comprehensive school system has historically evolved from centralised governance into a blend of national and local (municipal) decision-making authority. The two-fold model of governance was launched in the 1970s according to the planning economy logic, where the national education policies were enacted and regulated through strict and detailed legislation, a redistributive and ‘earmarked’ state subsidy system and a uniform national core curriculum. At an ideological level, comprehensive reform was tied firmly to the principle of equal opportunities. However, changes in administrative thinking since the 1990s have created a new balance between governmental and local governance of the education system. In this chapter we portray key changes occurring in the relationship between central and local administration as well as the most significant changes in the education system by comparing three case municipalities. We compile various register and document data about the education systems of these municipalities and assess whether we should talk about diverse municipal basic education in Finland instead of a single, uniform basic education system. We conclude that the national, previously more uniform basic education system is transforming into diverse, local basic education systems. We argue that local self-government and varying service accessibility pose a challenge to the equality of the service system at the national level.