Beginning this school year, Indiana principals’ job descriptions will include conducting annual teacher evaluations [1], under a law passed by state lawmakers last year, the Huffington Post reports. Public Law 90 requires that districts conduct annual teacher evaluations that place educations into four performance categories tied to merit pay [2]: highly effective, effective, needs improvement and ineffective. Only teachers who receive a “highly effective” or “effective” rating will receive a raise [3], the Times of Northwest Indiana reports, while those who fall into the latter two categories will see no changes in their salary. It marks a shift from traditional practice of determining salary increases based on seniority and educational degrees earned. Karen Combs, director of elementary education for the Lafayette School Corp., said principals already put in an eight-plus-hour workday before accounting for the time it will take them to evaluate each teacher [1], the AP reports…