Complex sentence: Wilson was an advocate for integrating, funding and improving public schools, and became assistant director of the National Citizens Commission for Public Schools as well as assistant director of the 1955-56 White House Conference on Education.
Split into simpler sentences: Wilson was an advocate for integrating, funding and improving public schools. He became Assistant Director of the National Citizens Commission for Public Schools as well as Assistant Director of the 1955-56 White House Conference on Education.