Very simple. All of the seats for the board of education and for the trustees are at large, not district based. A district based system would permit candidates from different parts of the municipality representation, rather than a slew of people from the region as a whole and who may not have the best interests of individual neighborhoods in their hearts. The current system completely denies the minority voters (minority in the sense of numbers, not race) any voice at all. They are completely ignored and have no political pull. A distric system would compensate.
The real point concerns the role of the courts. Based on the opinion, it does sound like a system designed to squelch a certain segment of the population.
Wow, you actually agree with this ruling? So U.S congressional districts should also be redrawn along racial lines?