This appeal raises two related questions: (1) Whether collateral estoppel has any application to school desegregation cases; and (2) Whether a finding in a school desegregation case that the defendants did not, prior to July 26, 1965, act with segregative intent in the operation of a public school system may be relitigated because no specific finding was made with respect to May 17, 1954, the date of the decision in Brown v. Board of Education. We agree with the district court that principles of collateral estoppel have not been rendered totally inapplicable to school desegregation cases. However, we disagree with the district court’s conclusion that the issue of intent prior to July 26, 1965 may be relitigated in this case. Accordingly, we reverse.
I.
A.
This is the second interlocutory appeal in an action filed May 29, 1974 which seeks a holding that the public schools of Cincinnati are unlawfully segregated by race. However, this effort did not begin with the 1974 complaint of Mona Bronson. On November 11,1963 a class action was filed on behalf of “Negro minors within the school district of Cincinnati .... ” In that action the district court found that the following paragraph from the amended complaint fairly summarized the eleven paragraphs of the prayer:
(3) That defendants be further enjoined from operating and providing racially segregated public schools, assigning plaintiffs, and the members of the class they represent, to racially segregated schools, and seeking to further extend existing patterns of racial segregation.
Deal v. Cincinnati Board of Education (Deal I),
Deal I
was affirmed by this court,
*838 We have stated above that a showing of impairment of a Negro student’s capacity to learn, arising from his school’s racial imbalance, does not, standing alone, make out a case of constitutional deprivation. Evidence of such harm, however, may indeed be relevant to the issues of the case before us.
Id. at 65.
Following remand, the district judge suggested that the plaintiffs tender an amended complaint or conduct further discovery to establish that new evidence was required to comply with the remand order. After six months of inaction by the plaintiffs the district court filed a memorandum opinion and subsidiary findings of fact. The plaintiffs appealed, and this court again affirmed.
Deal v. Cincinnati Board of Education (Deal II),
On appeal from the findings on remand this court held that the district court’s findings of fact were not clearly erroneous. In addition to contesting the factual findings of the district court, the plaintiffs argued that the law had been changed since the time of the adjudication in
Deal I
and that recent Supreme Court decisions required reversal of this district court judgment. This court pointed out in its opinion,
B.
In his remand memorandum following affirmance of
Deal I
the district judge “offered] the view that if there have indeed been intervening occurrences and developments constituting invasions of constitutional rights, they could appropriately form the basis of separate litigation, even though they may not properly be appended to the present action.”
Id.
at 1396. After the affirmance of
Deal II
the present class action was filed in 1974 charging the defendants with numerous acts of discrimination and seeking declaratory and injunctive relief. The defendants sought dismissal on the ground that the final judgments in
Deal I
and
Deal II
barred relitigation of the issues raised in this case. The district court refused to apply strict res judicata principles, but determined that the doctrine of collateral estoppel should apply to foreclose “relitigation of essential facts or issues which were previously litigated by the parties (or their privies) and judicially determined.” This court granted an interlocutory appeal and affirmed the district court.
Bronson v. Board of Education,
In deciding the first interlocutory appeal this court reviewed the holdings of
Deal I
and
Deal II.
The claim of the
Bronson
plaintiffs that intervening decisions of the
*839
Supreme Court had changed the law so as to render collateral estoppel inapplicable to this case was again specifically rejected.
Nevertheless, this court held that plaintiffs’ allegations of continuing wrongful actions by the defendants after July 26, 1965 declared a different cause of action than the one decided in Deal and that collateral estoppel does not apply to this cause. We recognized that in order to establish their claim of post-1965 constitutional violations the plaintiffs might need to rely on pre1965 actions and policies of the Board. However, the extent to which the district court at the Bronson trial could properly take judicial notice of facts stipulated or proven in Deal, or receive new evidence of pre-Deal occurrences or conditions, is limited by the relevancy of such evidence to the inquiry in Bronson. That inquiry was identified as one designed to determine the existence or non-existence of unlawful segregation during the post-July 26, 1965 period. Id. at 350.
II.
Nearly seven years ago this court affirmed the district court on the first interlocutory appeal, and set forth the criteria for consideration of evidence relating to the pre-1965 period. Yet there has been no trial of this case and the same issues are now before us on a second interlocutory appeal. This appeal was granted because the district court has failed to follow the directions of this court.
A.
Following issuance of the mandate from this court, the plaintiffs filed an amended complaint in which they added new defendants. The district judge who had made the collateral estoppel decision retired, and the case was transferred on June 27, 1980 to a different judge. Thereafter this judge issued an “Entry Setting Forth This Court’s Interpretation of Sixth Circuit Opinion in
Bronson v. Board of Education.”
This document is published at
The “new” theory, referred to by the plaintiffs as the “pre-Brown-dual-system theory,” is that at the time of the historic decision of the Supreme Court in
Brown v. Board of Education,
B.
The district court heard oral arguments on the issue on November 24,1980 and took it under advisement. On February 11,1982 the district judge issued a published opinion,
III.
We agree with the district court that
Columbus
and
Dayton II
did not render the principles of collateral estoppel totally inapplicable to school desegregation cases. In
Bronson
we discussed the application of collateral estoppel to school desegregation cases in light of the strong public policy against school segregation and concluded that “issue preclusion” was the proper approach.
Since
Bronson
was decided the Supreme Court has, on several occasions, affirmed the central place of the principles of res judicata and collateral estoppel in civil litigation. See
Montana v. United States,
The federal courts have traditionally adhered to the related doctrines of res judicata and collateral estoppel. Under res judicata, a final judgment on the merits of an action precludes the parties or their privies from relitigating issues that *841 were or could have been raised in that action. Cromwell v. County of Sac,94 U.S. 351 , 352 [24 L.Ed. 195 ], Under collateral estoppel, once a court has decided an issue of fact or law necessary to its judgment, that decision may preclude re-litigation of the issue in a suit on a different cause of action involving a party to the first case. Montana v. United States,440 U.S. 147 , 153 [99 S.Ct. 970 , 973,59 L.Ed.2d 210 ]. As this Court and other courts have often recognized, res judicata and collateral estoppel relieve parties of the cost and vexation of multiple lawsuits, conserve judicial resources, and, by preventing inconsistent decisions, encourage reliance on adjudication. Id., at 153-154 [99 S.Ct., at 973-974 ],
(Footnote omitted). Neither Columbus nor Dayton II concerned collateral estoppel, and we find nothing in either decision which raises doubt about the application of principles of collateral estoppel in this case.
In
Montana v. United States, supra,
the Court warned against “[u]nreflective invocation of collateral estoppel against parties with an ongoing interest in constitutional issues ... . ”
IY.
We do not agree with the district court that our Bronson opinion “has been rendered obsolete to the extent it forecloses any and all inquiries prior to July 26, 1965, on the ground that Columbus and Dayton II . . . have established the propriety and necessity of considering issues that were not addressed in Deal."
A.
The district court erred in its basic assumption. While the Supreme Court approved a method of proving unlawful school segregation in Columbus and Dayton II, we find nothing in the opinion of the Court in either case which requires the use of this method. The Supreme Court did not identify a new theory of liability in these cases. Its affirmance of this court’s judgment in each case was based on the determination that findings of intentional segregation in the school systems of Columbus and Dayton were not clearly erroneous.
The plaintiffs in
Columbus
and
Dayton II
were free to rely on any relevant evidence to prove the existence of unlawful segregation. They chose to introduce evidence of pre-1954 conditions in the two school systems from which inferences of intentional segregative acts could be drawn and then to show that these conditions had not been remedied as of the time of
Brown.
Once the courts made the desired inference and accepted the evidence of the continued existence of constitutionally impermissible conditions, the Columbus and Dayton boards of education were in the same legal position as those boards which enforced state laws mandating separation of the races. They were required to take the necessary steps to “convert to a unitary system in which racial discrimination would be eliminated root and branch.”
Green v. County School Board, supra,
*842 B.
The district court also erred in its statement that the courts in Deal failed to consider the effect of “remote” evidence on the issue of segregative intent. An examination of the Deal record and briefs discloses that both plaintiffs and defendants introduced and relied upon pre-1954 evidence, particularly in their stipulation. Examples are Joint Exhibit 17, Tabulation, “Racial Composition of New School Centers Opened Between 1944-45 and 1964-65, Cincinnati Public Schools” and Joint Exhibit 53, Tabulation, “Memberships, Percent and Number of Negro Pupils, by School, Cincinnati Public Schools, 1950-51, 1960-61, 1963-64, and 1964-65.” Other exhibits detailed public school building programs for the period 1944-1962 and various attendance zone boundary lines at stated times both before and after May 1954. The district court in its opinion in Deal I referred to the stipulation as follows:
The stipulation, largely through its Joint Exhibits, further establishes in great detail the historical background culminating in this tabulation of [1964-65] school population.
The contention that “remote” evidence was not considered in Deal appears to be based primarily on a single paragraph in this court’s opinion in Deal II:
It is not necessary for us to rule on the so-called “Voluntary Schools” which had been established at the request of Negroes but which no longer exist, or on other programs and practices which were discontinued prior to the filing of this lawsuit.
On remand the district court followed the directions of this court precisely. In Findings 1-16 the district court outlined the distribution of black students throughout the system, determined that there was no inequality of educational facilities, and found that the Board’s actions with respect to specific schools and programs were not racially motivated. In finding these facts the district court referred to and relied,
inter alia,
upon pre-1954 evidence. Findings 17 and 18 concerned pupil achievement and the inconclusive nature of the testimony of plaintiffs’ expert witnesses on the “deleterious effects that may have been attributed to a racially imbalanced school . . . . ”
See
Appendix to Opinion in
Deal II,
On appeal all of these findings were held to be supported by the evidence.
C.
The plaintiffs in this case may not reopen the issue of whether the Cincinnati school system was unlawfully segregated prior to July 26, 1965. That issue was decided in
Deal.
In our first interlocutory decision in this case we noted that
Deal I
and
II
had settled the question of segregative intent by “finding that the Cincinnati Board had no such intent
up to July 26, 1965,
when the
Deal
inquiry ended.”
The district court’s order forecloses the plaintiffs from showing that the defendants did, prior to July 26, 1965, act with a segregative intent or that the actions, inactions or policies of the Board prior to that date violated the constitutional rights of minority pupils or their parents. These issues have been decided and under the issue preclusion application of collateral estoppel may not be reopened.
The court’s decision in Bronson was not rendered obsolete by Columbus and Dayton II. It is still the controlling law of this case and must be applied by the district court in further proceedings herein.
The interlocutory order of the district court is reversed.
Notes
. The significance of May 17, 1954 is that from that time forward a plaintiff who could prove that a public school system was intentionally
*842
segregated became entitled to equitable relief. A plaintiff need not prove that unlawful segregation existed on May 17, 1954, however. If its existence is shown as of any date
thereafter,
the school system has the same affirmative duty to desegregate. In
Keyes
v.
School District No. 1, supra,
the seminal “northern” case in the Supreme Court, unlawful segregation was proven as of 1969. In the Cleveland school case,
Reed v. Rhodes,
