> 63% of students attending college 63% is the statistic for high-school grads, whereas the person you're replying to is talking about all "18-24 kids", so "a

> 63% of students attending college 63% is the statistic for high-school grads, whereas the person you're replying to is talking about all "18-24 kids", so "all kids graduate high school" is an appendix to assumption 1) you would need to add.