Complex sentence: Columbia University was ranked 2nd among U.S. colleges for 2017 by "Wall Street Journal" and "Times Higher Education" and 2nd among Ivy League schools was ranked 4th overall among U.S. national universities for 2016 by "U.S. News & World Report".
Split into simpler sentences: Columbia University was ranked 2nd among U.S. colleges for 2017 by "Wall Street Journal" and "Times Higher Education" and 2nd among Ivy League schools. It was ranked 4th overall among U.S. national universities for 2016 by "U.S. News & World Report".