Complex sentence: Joel Irwin Klein (born October 25,1946) is an American lawyer and school superintendent was Chancellor of the New York City Department of Education, the largest public school system in the United States, serving more than 1.1 million students in more than 1,600 schools.
Split into simpler sentences: Joel Irwin Klein (born October 25,1946) is an American lawyer and school superintendent. He was the Chancellor of the New York City Department of Education, the largest public school system in the United States, serving more than 1.1 million students in more than 1,600 schools.