copyright and SAT words

[bluebooger]

so I was thinking about trying to make a mobile app to help people learn some of the words that appear most often on the SAT

but of course that brings up the problem, where do I get this list of words ?

it's easy to find a list
there are 1000s listed on google
https://www.google.com/webhp?sourceid=ch...s+sat+exam

but I would guess most of these lists are copyrighted

for example:

there's this
http://img.sparknotes.com/content/testpr....vocab.pdf
but it's from sparknotes

and this
washingtonpost.com: Education Marketplace
which seems like it might be a paid advertisement from Kaplan

so if I wanted to use a word list on a mobile app (and charge for the app or give it away for free, but with advertisements) anybody have any idea on copyright ?

are the SAT vocabulary lists copyrighted ?

I mean, how is this NOT a violation of copyright
ProGo Learning – Personalized Tutoring in the Greater Boston Area » Vocabulary Lists from The Official SAT Study Guide

I would hate to make an app and then get a copyright violation levied against it