A classic 1966 study in this field by James Coleman, known as the "Coleman Report", analyzed the performance of over 150,000 students and found that student background and socioeconomic status are much more important in determining educational outcomes than are measured differences in school resources (i.e.. 
Yorúbọid is a group of languages composed of ìgalà, a language spoken in Central Nigeria, and the Edekiri Group, The members of which are spoken in a band across Togo, Benin and southwestern Nigeria.. 