If u take the whole hindu population u will find the literacy rate is 64% out of 800 million hindus while jains, christians, buddhist, sikhs are 95%, 81% , 72% and 70% respectively while muslims are 60% literate [http://www.censusindia.net/religiondata/index.html] so the point is simple if u combine all minorities except muslims, hindus are highly illetrate.