John Henry Haaren
John Henry Haaren was an American educator and historian.
Haaren's father was German and his mother Irish and English. He studied under Prof. N. M. Butler at Columbia University, 1889–91, before becoming a teacher in New York. In 1907 he became Associate Superintendent of Schools in New York, increasing the number and efficiency of kindergartens and starting classes to teach English to foreigners.
He was president of the department of pedagogy in the Brooklyn Institute. Haaren High School was named in his honor. The Charles B. J. Snyder-designed school which was initially DeWitt Clinton High School is now Haaren Hall on the campus of the John Jay College of Criminal JusticeWorks
