Petru Aurelian Simionescu, formerly an instructor at the University of Alabama at Birmingham (“UAB”), appeals from an ad *430 verse summary judgment in favor of the Board of Trustees of the University of Alabama (“the Board”) and dismissal of his claims against individual defendants in Si-mionescu’s employment discrimination lawsuit filed pursuant to Title VII of the Civil Rights Act of 1964, 42 U.S.C. § 2000e-2(a), 42 U.S.C. §§ 1981, 1988, 1985, 1986, and alleging common law tort claims under Alabama law.

On appeal, Simionescu asserts that the district court judge was biased against him. Simionescu also argues that the district court erred in dismissing his state law claims and conspiracy claims, brought pursuant to 42 U.S.C. § 1985(3), against the individual defendants, because the court did not cite any law in support of the dismissal of those claims and the evidence supported his conspiracy claims. Simion-escu asserts that the district court abused its discretion by not allowing Simionescu access to his supervisor’s course evaluations, another faculty member’s faculty file, and the Board’s offer letters to three other faculty members on the ground that none of these individuals were proper comparators and thereby erred by determining that he had not established a prima facie case of discrimination. Finally, Si-mionescu argues that the district court erred in determining that the Board’s reasons for terminating Simionescu were not pretextual. We address each claim in turn.

I.

Simionescu argues that the district judge was biased against him. However, because we generally do not consider on appeal issues which a party failed to raise before the district court, Access Now, Inc. v. Southwest Airlines Co., 385 F.3d 1324, 1331 (11th Cir. 2004), we do not consider Simionescu’s claim of bias as he failed to raise it before the district court by way of recusal motion or any other motion or pleading.

II.

Simionescu attempts to appeal the district court’s dismissal of his complaint against individual defendants. However, in a civil case, a party must file a notice of appeal with the district court within 30 days after entry of the judgment or order appealed from. Fed. R.App. P. 4(a)(1)(A). In the event that the district court clerk fails to enter a judgment when appropriate, the default is cured as a matter of law by the passage of 150 days from the entry of the underlying order. Fed. R.App. P. 4(a)(7)(A)®.

The district court dismissed Simiones-cu’s complaint against the individual defendants and later made that dismissal a final order on September 10, 2010. Although no judgment was subsequently entered, the defect was cured 150 days after the district court’s September 10, 2010 order. See Fed. R.App. P. 4(a)(7)(A)(ii). Accordingly, Simionescu’s December 1, 2011 notice of appeal was untimely as to the dismissal of his complaint against the individual defendants because it was filed more than 30 days after the 150 day cured final judgment was entered against him.

III.

Simionescu also contends that the district court erred in determining that two other faculty members at UAB, Tina Oliver and W. David Merryman, could not serve as comparators for purposes of Si-mionescu’s Title VII intentional discrimination claim. Where, as here, a plaintiff seeks to prove an intentional discrimination claim using the burden-shifting framework set out in McDonnell Douglas Corp. v. Green, 411 U.S. 792, 93 S.Ct. 1817, 36 L.Ed.2d 668 (1973), the plaintiff may prove *431 a prima fade case of disparate treatment by showing that he was a member of a protected class and was subjected to an adverse employment action in contrast to similarly situated employees outside the protected class. Wilson v. B/E Aerospace, Inc., 376 F.3d 1079, 1087 (11th Cir. 2004). In determining whether comparator employees were similarly situated, the district court should consider whether they were involved in, or accused of, the same or similar conduct and disciplined differently. See Maniccia v. Brown, 171 F.3d 1364, 1368 (11th Cir. 1999).

Here, Oliver and Merryman were not sufficiently similarly situated to Simiones-cu because Oliver, unlike Simionescu, was not a tenure-track professor and had received far fewer negative reviews than Si-mionescu had, and Merryman taught in a different department from Simionescu, had a different supervisor, and Simionescu did not make any claims about the quality of Merryman’s teaching. Because Simiones-cu failed to identify any similarly situated comparators, Simionescu failed to establish a prima facie case of discrimination, and the district court did not err in granting summary judgment on this issue. See Wilson, 376 F.3d at 1087; Maniccia, 171 F.3d at 1368.

IV.

Simionescu also challenges the district court’s denial of his motion to compel discovery to obtain documents pertaining to other faculty members. 1 However, these documents would have been relevant only if the faculty members were proper comparators for purposes of Si-mionescu’s Title VII claim, and none of the faculty members were proper comparators because each occupied a different position from Simionescu or had not received comparable negative reviews of their respective performances. Moreover, Simionescu’s motion was denied for additional reasons, including that he had failed to comply with the district court’s scheduling order and his discovery requests were overly broad and generic, and Si-mionescu does not challenge the district court’s determinations as to these deficiencies. The district court did not abuse its discretion by denying Simionescu’s motion to compel discovery of documents relating to these individuals.

V.

Simionescu also argues that the district court erred in determining that the Board’s reasons for terminating him were not pretextual. Under the McDonnell Douglas framework, once a plaintiff establishes a prima facie case of discrimination and the employer has offered a legitimate, nondiscriminatory reason for its employment action, the burden shifts to the plaintiff to offer evidence that the reason is pretextual. See Wilson, 376 F.3d at 1087. A plaintiff may show pretext either “directly by persuading the court that a discriminatory reason more likely motivated the employer or indirectly by showing that the employer’s proffered explanation is unworthy of credence.” Jackson v. Ala. State Tenure Comm’n, 405 F.3d 1276, 1289 (11th Cir. 2005) (internal quotation marks omitted).

Simionescu has conceded that there were problems with his teaching and that he had received overwhelmingly negative teaching evaluations. Although Simiones-cu claims that two other faculty members and his supervisor had incited students to write complaints about his teaching, Si-mionescu admitted that these assertions *432 were based on speculation, and he failed to present any evidence to prove them. Si-mionescu has also failed to present evidence, other than his own speculative opinions, to support his additional theories that he was fired because UAB undervalued his teaching and because he complained about a fellow-employee’s alleged neglect of her duties.

AFFIRMED IN PART, DISMISSED IN PART.