Last week, Merryl Tisch, the chancellor of New York’s Board of Regents, announced that she will step down as Chancellor and leave the board at the end of her term in March 2016.

Dr. Tisch has overseen significant shifts in state education policy since she became Chancellor in 2009. Under her leadership, New York became one of the first states in the nation to adopt the Common Core standards, which are intended to better prepare students for college.

In announcement, she defended the push for more challenging tests and higher student expectations:

“We cannot take this moment to back away from the need for higher standards. We cannot back away from standards. We cannot back away from assessments that give us an accurate measure of student performance and that informs instruction and curriculum.”