Initiatives developed by sub-regional and regional organizations (for example the Organization of Eastern Caribbean States and the East African Community) intended to harmonize curricular contents, standards, and assessment in some subject areas such as mathematics and science education, as a way to foster integration and facilitate the mobility of students and teachers across countries. Harmonization is seen as a means of achieving an increasingly networked and interrelated group of curriculum and examination systems and improving education against common agreed benchmarks of excellence. Curriculum harmonization is also an important issue within decentralized and federal education systems.