We studied rookie teachers working in really tough neighborhoods, asking which teachers are still going to be here in teaching by the end of the school year, and of those, who will be the most effective at improving learning outcomes for their students?
Estudámos professores novatos que trabalhavam em bairros  muito difíceis, perguntando quais deles ainda estariam ali a dar aulas no final do ano letivo, e desses, quais iriam ser os mais eficazes em melhorar os resultados de  aprendizagem dos seus alunos.