I don’t really know anything about financial aid since my parents are filling out the form, but I thought I would link a couple of financial aid estimators for you to try out:
Hotchkiss: http://hotchkissmedia.org/financialaid/estimator.php
Exeter: https://www.exeter.edu/admissions-and-financial-aid/tuition-financial-aid/am-i-eligible-financial-aid
Choate: https://www.choate.edu/admission/tuition-and-financial-aid/financial-aid-profiler
Hope this helps!