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(Undated) -- The latest study from WalletHub says Nebraska has the 7th-best school systems in America. WalletHub says Nebraska has the 5th-highest average SAT scores and the 4th-highest math scores. Nebraska also ranks 8th for quality of schools and 7th for safety. Iowa ranks 16th overall and has the 2nd-lowest dropout rate in the country. WalletHub says the state with the best school systems is Massachusetts and the state with the worst is New Mexico. A full list of states is available here.