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Due to student loan default rates , the U.S. Department of Education has criticized for-profit institutions , with the Secretary of Education asserting that " too many for-profit schools are saddling students with debt they can not afford in exchange for degrees and certificates they can not use . "
 U.S. Department of Education
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 U.S. Department of Education