Reasons include evolving understanding of the principal's role as instructional leader, accountability pressures from states and the federal government, and worries about turnover and leadership shortages in high - needs schools. (wallacefoundation.org)
We need to evolve our understanding of what causes obesity. (idmprogram.com)
It also underscores the difficulty of neatly defining the country's ethos and inhabitants, a challenge that lies at the heart of the Museum's commitment to and continually evolving understanding of American art. (dreamideamachine.com)