content: This is a good system that my children's school uses. I have been an early childhood teacher for 5 years and I would have loved this system. I didn't have access to the RIGGS system in the schools I taught at. This requires a lot of parental involvement, however, so it may not be good for schools with low parental participation. These cards can be purchased for under $23 on the RIGGS website and I am disappointed to see them so drastically overpriced on here.