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He attended the United Nations International School in the city , where he was a stand-out cello player , and graduated from Northern Valley Regional High School at Old Tappan after his family moved to Harrington Park , New Jersey .
 United Nations International School, Northern Valley Regional High School at Old Tappan, Harrington Park , New Jersey
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 United Nations International School, Northern Valley Regional High School at Old Tappan, Harrington Park , New Jersey