SUMMARY ORDER

Plaintiff-appellant Deborah L. Davis appeals from the district court’s grant of summary judgment for Oyster Bay-East Norwich Central School District (the “School District”), dismissing her employ *15 ment discrimination complaint. We assume the parties’ familiarity with the underlying facts, procedural history of the case, and issues on appeal.

We review de novo a district court’s grant of summary judgment, see Miller v. Wolpoff & Abramson, L.L.P., 321 F.3d 292, 300 (2d Cir. 2003), and its application of res judicata and collateral estoppel principles, see O’Connor v. Pierson, 568 F.3d 64, 69 (2d Cir. 2009); Chartier v. Marlin Mgmt, LLC, 202 F.3d 89, 93 (2d Cir. 2000). For the reasons articulated by the magistrate judge in his well-reasoned report and recommendation, see Davis v. Oyster Bay-E. Norwich Cent. Sch. Dist., No. 09-cv-1823, 2010 WL 3924681 (E.D.N.Y. June 17, 2010), which the district court adopted in full, see Davis v. Oyster Bay-E. Norwich Cent. Sch. Dist., No. 09-cv-1823, 2010 WL 3855237 (E.D.N.Y. Sept.28, 2010), Davis’s action against the School District was precluded insofar as she sought to relitigate issues stemming from her first and third complaints filed with the New York State Division of Human Rights (“NYSDHR”) or from her termination hearing held pursuant to New York Civil Service Law § 75 (“section 75”), 2 and time-barred insofar as she sought to raise the claim underlying her second NYSDHR complaint. Furthermore, we agree with the district court that even if Davis’s claims were not procedurally barred, she would lose on the merits, as she has failed to put forth evidence from which a rational trier of fact could find unlawful retaliation.

Davis contends that the district court was required to conduct a de novo hearing before it accepted the magistrate judge’s recommendations. However, the Federal Magistrates Act, see 28 U.S.C. § 636(b)(1), “calls for a de novo determination, not a de novo hearing” of contested issues. United States v. Raddatz, 447 U.S. 667, 674, 100 S.Ct. 2406, 65 L.Ed.2d 424 (1980). Nothing in the record suggests that the district court did not conduct a de novo determination, and the court expressly stated that it did so. In our own de novo review, we find no error in the district court’s ruling.

Finally, Davis argues on appeal that she was denied due process at her section 75 hearing and seeks a new termination hearing. However, she did not make that argument to the district court. Indeed, she *16 expressly represented to the district court, in her objections to the magistrate judge’s report, that she was not seeking to have the findings made by the section 75 hearing officer reversed in this matter, or to relitigate that hearing. Thus, we decline to address her due process claim. See Singleton v. Wulff, 428 U.S. 106, 120, 96 S.Ct. 2868, 49 L.Ed.2d 826 (1976) (“It is the general rule, of course, that a federal appellate court does not consider an issue not passed upon below.”); Aslanidis v. U.S. Lines, Inc., 7 F.3d 1067, 1077 (2d Cir. 1993) (“[A] party opposing summary disposition of a case must raise all arguments against such remedy in the trial court and may not raise them for the first time on appeal.”).

We have considered Davis’s other arguments and find them to be without merit. For the foregoing reasons, the judgment of the district court is hereby AFFIRMED.