As described by some observers, white flight rapidly and irreversibly leads to black or nearly all black schools, once the ratio of blacks to whites in a school reaches a tipping point. Research in Mississippi, however, has uncovered school districts where tipping has not only stopped, in some cases it has even reversed. Events there call into question the universal applicability of tipping theory and suggest that white flight may not be the insurmountable barrier to desegregation that some analysts have feared it would be. Changes in enrollment patterns in thirty Mississippi school districts make sense if looked at from a perspective that assumes that, in racially balanced school districts, white flight ultimately depends on the black/white ratio in the population as a whole rather than just the ratio in the schools. The results should be taken with caution since the study encompasses only a short time period and a limited number of districts. The districts are not typical of the average American school district, and many are rural. All are under strict racial balance court orders, and unlike northern urban districts, they are not, for the most part, surrounded by "whiter" school systems to which hostile whites can flee. The experience of the school systems studied suggests that tipping theory is not a rock to which a national desegregation policy can be moored. (Author/AM)