By Rebecca Griesbach | rgriesbach@al.com EDITOR'S NOTE: On the 70th anniversary of the Brown v. Board decision, AL.com's Education Lab examines the legacy of court-ordered desegregation - and what opportunity gaps still remain in communities today. Paulette Locke-Newberns and her sisters, Mary and Carolene, remember the moment they set out to save their childhood schoolhouse. Trees […]