Petition for certiorari (Rule 65)

As a rule, a petition for certiorari under Rule 65 is valid only when the question involved is an error of jurisdiction, or when there is grave abuse of discretion amounting to lack or excess of jurisdiction on the part of the court or tribunals exercising quasi-judicial functions. Hence, courts exercising certiorari jurisdiction should refrain from reviewing factual assessments of the respondent court or agency.