"From my experiences in developing robust and impactful curriculums for elementary, the first point of failure typically stems from rigidity in not allowing teachers and educators to use their own professional judgement in how to implement the programs. Given that children are all unique in their personality and how they learn, professional educators need to be given the flexibility to customize the programs to their individual students. The programs that rely solely on the judgement of a textbook writer often fail the most. The other reason that I have personally seen a program fail is lack of buy-in from teachers and parents. When I develop new programs, I first ensure that the educators using them will find them exciting and effective. And the parents are easier to convince of the teacher is also on board."