Intent on preserving the Bloomberg administration’s education legacy, the Department of Education has hired a favored consulting firm to craft a plan that would safeguard a signature policy. The city has hired the Parthenon Group to assess the strengths and weaknesses of the system through which principals choose support organizations to provide professional development, curriculum, and budgeting help. … “While there is no set of actions that can perfectly ensure ‘sustainability’ of the network model, the goal of the project will be to identify a series of steps that can bolster the odds of sustaining those elements the DOE views as most essential,” the firm wrote in its bid for the project. The confidential bid was submitted in April and obtained by GothamSchools.