It’s been more than a decade since Michael Rebell filed a lawsuit [1] that led to increased school funding in New York. Now, the lawyer and Columbia University Teachers College professor is on to his next crusade: closing the achievement gap by providing services both inside and outside schools, the Huffington Post reports. The achievement gap refers to performance disparities between groups of students from different backgrounds. Rebell’s Campaign For Educational Equity recently released five new white papers [2] that offer legal and financial analyses of broad-based educational equity…