Why New Principals in February, CCSD?

Why change horses in mid-stream? 

The Charleston County School District just announced four new principals who are taking their positions this month. Shouldn't these decisions be made in the summer before school starts? It makes you wonder if somehow they forgot.

On the other hand, perhaps the principals signal a new rigor in standards in the four schools affected--Burke High, Stall High, North Charleston High, and Northwoods Middle. Note that these schools do not dwell on the heights of success at present. 

Let's also hope that Henry Darby, who also sits on the County Council, has lots of energy. He's going to need it for both jobs.