Ruby: high school or less category lets them down as they have a massive 68% compared to the national average of 45.1%
This only seems "massive" because it is for high school or less. Jews, Hindus and others that completed high school and then went on to college or higher are NOT reported in this category.
I can't figure out if you're deliberately trying to spin these figures in an attempt to try to make them mean something they don't Ruby, or if you really do not know how to read and interpret the data.