Finland, one of the early partners of the CCR, is also one of the top PISA performers in its many iterations. Its curriculum can be found at: http://www.oph.fi/english/sources_of_information/core_curricula_and_qualification_requirements/basic_education
We also recommend this paper The Finnish National Core Curriculum_Vitikka et al. 2011 to understand the process through which Finland’s curriculum operates.