Not in Suzuki but I learned something new about it.
I was a music major in college. One of my friends there was taught via the Suzuki method and had a hard time reading music. This made me a bit nervous about the method, since some people say they delay reading music too long. So, obviously my friend got pretty far, but this did hold her back. (She dropped out.)
I spoke with a Suzuki teacher recently. She said that in the old days, this was true-- reading music was delayed. Why? When Americans observed in Japan, they did not see music reading being taught during lessons. This was TRUE. HOWEVER, the missed a big piece of the puzzle-- children in Japan were/are being taught how to read music during the regular school day, so they did not include this in lessons. We don't have a standard curriculum like they do in the US, obviously, so not all children will have this exposure. Teacher said that now children are transitioned quickly into reading music. It made me feel better!