What Is A Negative SAI (Student Aid Index)?This question is about the student aid index. A zero or negative SAI indicates a student with the most relative need for financial aid. The lowest SAI possible is -$1,500. A student with a -$1,500 SAI has less capacity to pay (and therefore needs more aid) than a student with […] The post What Does A Negative SAI Mean? appeared first on The College Investor .