Quick search by citation:

20 U.S. Code § 1707 - Population changes without effect, per se, on school population changes

When a court of competent jurisdiction determines that a school system is desegregated, or that it meets the constitutional requirements, or that it is a unitary system, or that it has no vestiges of a dual system, and thereafter residential shifts in population occur which result in school population changes in any school within such a desegregated school system, such school population changes so occurring shall not, per se, constitute a cause for civil action for a new plan of desegregation or for modification of the court approved plan.

Statutory Notes and Related Subsidiaries
Effective Date

Section effective on and after sixtieth day after Aug. 21, 1974, see section 2(c) of Pub. L. 93–380, set out as a note under section 1221–1 of this title.