Investigations math

I interviewed a teacher in an elementary school about investigations math. I first asked him how did it affect his class. He said, "that as a whole it hurt the class." His students math scores went down. I asked him if it was good for any body. He replied, "that it did help a select few." I was a good way for some students to develop skills in math. The problem was how the district implemented it to the classroom. He felt like a lot of the teachers were not ready to teach it. They were apposed to the change. So it was met with a lot of opposition. The teacher that i interviewed was for the change but said that the pendulum swung to far. They didn't need to change the complete model of instruction. It would have been best to change some of the instruction and Incorporated it with the existing model of instruction.
The second area that hurt the change was how they implemented it in the district. The parents were up in arms. they didn't know what the teacher was teaching and how to help their kids. They needed to present the information to the parents. it was mass confusion on all levels.
The teacher said that he is able to incorporate both models of instruction in his classroom and that he is receiving the highest test scores in math then he has ever seen.
It looks like investigations math was a better fit for some teachers then others. As i read through article and article on the topic I felt like the numbers supported both sides of the argument. I personally think that it is up to the teacher to have the responsibility to teach how their students learn best. That's why we are taught all these different models of instruction because we all learn differently.