space madeness, I agree with most of what you have said regarding what Durkheim says about the link between atheism and suicide but disagree about the link between education and suicide - Take native american youths for example - the suicide rate is very high in this group when they leave their religion and particularly when they turn to substance abuse whereas school enjoyment and academic success actually protects against suicide (Religion and Suicide ....Atheism Agnosticism- Lizardi and Gearing 2009) overall they indicate that greater religiousity is associated with decreased risk of suicide behaviour.
protestants have the highest risk but not as high as atheists
muslims and jews have the lowest. Catholics are in between protestants and muslims/ jews
edit: you haven't mentioned age group and health related factors that the atheist participants were asked about as some statistics are based on the fact that 95% of self identified atheists say they prefer physican assisted suicide in end of life care and end of life suffering. Is this what your statistics mean by "suicide".