If the Maine Secretary of Education overcame his or her reluctance and did in fact ask Mississippi for advice, imagine their disappointment if the response was "we actually teach math".
Do you have a source for your response? I'm genuinely curious about what they changed to achieve this level of success. I'd be interested first for the actual educational methods, and secondarily I'd be interested in relating it to the idea of organizational changes that can produce relatively rapid reversals of a long term trend.