We do have to consider this:
Without this kind of development, will the White community honestly let seniority and quality/qualification keep teachers of color in the work force?
This development is good for both the White and people of color communities because it will challenge the White teachers to accept diversity more and to be more involved in promoting the diverse workforce that this modern community represents and not just to rely on their color to pad their backs when quality is lacking. White teachers must hone their skills, knowledge, and acceptance of others so that we have a less racist and less ignorant society about our surroundings.
There's a bit of unequal treatment involved on the face of the agreement, but that does not seem to be substantially detrimental or negative, because of two things: 1. repairing past discrimination, and 2. deterring present and future discrimination . It's obvious that without such development, that the White management will continue what it has been doing through the centuries: removing even the most senior employee of color, especially near retirement.
This kind of development does not have to be permanent, however. After a time, the White community could become so tolerant of others that color might not play a role in the hiring and retention of teachers. But for now, this enforcement will help fix an inveterate issue that's rampant throughout most sections of Minneapolis. It's like putting a pain killer on an illness to manage the pain just long enough to allow other medicines to heal the condition. Then the pain killer can be stopped once the condition is healed. (Time and incidents will tell Minneapolis when it is reasonable to lift this agreement.)