What follows is an opinion from the Supreme Court of the United States. Your task is to determine the bases on which the Supreme Court rested its decision with regard to the legal provision that the Court considered in the case. Consider "judicial review (national level)" if the majority determined the constitutionality of some action taken by some unit or official of the federal government, including an interstate compact. Consider "judicial review (state level)" if the majority determined the constitutionality of some action taken by some unit or official of a state or local government. Consider "statutory construction" for cases where the majority interpret a federal statute, treaty, or court rule; if the Court interprets a federal statute governing the powers or jurisdiction of a federal court; if the Court construes a state law as incompatible with a federal law; or if an administrative official interprets a federal statute. Do not consider "statutory construction" where an administrative agency or official acts "pursuant to" a statute, unless the Court interprets the statute to determine if administrative action is proper. Consider "interpretation of administrative regulation or rule, or executive order" if the majority treats federal administrative action in arriving at its decision.Consider "diversity jurisdiction" if the majority said in approximately so many words that under its diversity jurisdiction it is interpreting state law. Consider "federal common law" if the majority indicate that it used a judge-made "doctrine" or "rule; if the Court without more merely specifies the disposition the Court has made of the case and cites one or more of its own previously decided cases unless the citation is qualified by the word "see."; if the case concerns admiralty or maritime law, or some other aspect of the law of nations other than a treaty; if the case concerns the retroactive application of a constitutional provision or a previous decision of the Court; if the case concerns an exclusionary rule, the harmless error rule (though not the statute), the abstention doctrine, comity, res judicata, or collateral estoppel; or if the case concerns a "rule" or "doctrine" that is not specified as related to or connected with a constitutional or statutory provision. Consider "Supreme Court supervision of lower federal or state courts or original jurisdiction" otherwise (i.e., the residual code); for issues pertaining to non-statutorily based Judicial Power topics; for cases arising under the Court's original jurisdiction; in cases in which the Court denied or dismissed the petition for review or where the decision of a lower court is affirmed by a tie vote; or in workers' compensation litigation involving statutory interpretation and, in addition, a discussion of jury determination and/or the sufficiency of the evidence.

Opinion:
CHARDON, SECRETARY OF PUBLIC EDUCATION OF PUERTO RICO, et al. v. FERNANDEZ et al.
No. 81-249.
Decided November 2, 1981
Together with Chardon, Secretary of Public Education of Puerto Rico, et al. v. Rodriguez; Chardon, Secretary of Public Education of Puerto Rico, et al. v. Santiago de Orta; Chardon, Secretary of Public Education of Puerto Rico, et al. v. Angiuta de Rios; Chardon, Secretary of Public Education of Puerto Rico, et al. v. Sanchez; Chardon, Secretary of Public Education of Puerto Rico, et al. v. Santana; Chardon, Secretary of Public Education of Puerto Rico, et al. v. Perez-Ramirez; Chardon, Secretary of Public Education of Puerto Rico, et al. v. Roman de Molina; Chardon, Secretary of Public Education of Puerto Rico, et al. v. Collazo; Chardon, Secretary of Public Education of Puerto Rico, et al. v. Garcia; Chardon, Secretary of Public Education of Puerto Rico, et al. v. Lopez de Ferra; Chardon, Secretary of Public Education of Puerto Rico, et al. v. Beltran; Chardon, Secretary of Public Education of Puerto Rico, et al. v. Cacho de Freytes; and Chardon, Secretary of Public Education of Puerto Rico, et al. v. Navarro, also on petition for certiorari to the same court (see this Court’s Rule 19.4).
Per Curiam.
Respondents were nontenured administrators in the Puerto Rico Department of Education during the 1976-1977 school year. On dates prior to June 18, 1977, each respondent was notified by letter that his appointment would terminate at a specified date between June 30 and August 8, 1977. On June 19, 1978, Rafael Rivera Fernandez filed a complaint alleging that the terminations violated 42 U. S. C. § 1983. The District Court dismissed the suit, holding that the action had accrued on the date the employees received the letters and that the claims were therefore barred by the applicable 1-year statute of limitations, P. R. Laws Ann., Tit. 31, § 5298(2) (1968). The Court of Appeals for the First Circuit reversed on the ground that the limitations period did not begin running until respondents’ appointments ended. 648 F. 2d 765 (1981).
The decision below is contrary to a recent decision of this Court: Delaware State College v. Ricks, 449 U. S. 250 (1980). In that case, Ricks filed suit alleging that the denial of tenure at a state college deprived him of his rights under Title VII of the Civil Rights Act of 1964, 42 U. S. C. §2000e et seq., and under 42 U. S. C. § 1981. And we held that the applicable limitations periods began to run when Ricks was denied tenure, rather than on the date his employment terminated. His action was, therefore, time-barred.
The Court of Appeals for the First Circuit distinguished Ricks on the ground that Ricks had alleged that denial of tenure was the “unlawful employment practice,” whereas here respondents allege that termination of their employment as administrators was the “unlawful employment practice.” We think Ricks is indistinguishable. When Ricks was denied tenure, he was given a 1-year “terminal” contract. Thus, in each case, the operative decision was made — and notice given — in advance of a designated date on which employment terminated.
In Ricks, we held that the proper focus is on the time of the discriminatory act, not the point at which the consequences of the act become painful. 449 U. S., at 258. The fact of termination is not itself an illegal act. In Ricks, the alleged illegal act was racial discrimination in the tenure decision. Id., at 259. Here, respondents allege that the decision to terminate was made solely for political reasons, violative of First Amendment rights. There were no other allegations, either in Ricks or in these cases, of illegal acts subsequent to the date on which the decisions to terminate were made. As we noted in Ricks, “[m]ere continuity of employment, without more, is insufficient to prolong the life of a cause of action for employment discrimination.” Id., at 257. In the cases at bar, respondents were notified, when they received their letters, that a final decision had been made to terminate their appointments. The fact that they were afforded reasonable notice cannot extend the period within which suit must be filed. We therefore grant certiorari. The judgments entered below on May 8, 1981, and June 11, 1981, are reversed, and the cases are remanded for further proceedings consistent with this decision.
Reversed and remanded.
Petitioners request a writ of certiorari to the Court of Appeals for the First Circuit to review a total of 14 judgments entered in favor of 36 respondents. The published decision, discussed in text, represents one judgment in a suit brought by 23 respondents; that decision was issued May 8, 1981. See 648 F. 2d 765 (1981). Identical individual judgments in favor of the other 13 respondents were issued on June 11, 1981. See App. to Pet. for Cert. 11a (unpublished orders).
Delaware State College had a policy of giving a final 1-year contract to teachers who were denied tenure. Only when that contract expired, did the “employment relationship en[d].” 449 U. S., at 253. Apparently, the practice of the Puerto Rico Department of Education was similar in principle. Following a decision to terminate, the actual ending of employment was deferred to a designated date. Advance notice of termination is a customary and reasonable employment practice which affords the employee an opportunity to find another job.

Question: What is the basis of the Supreme Court's decision?

Choices:
judicial review (national level)
judicial review (state level)
Supreme Court supervision of lower federal or state courts or original jurisdiction
statutory construction
interpretation of administrative regulation or rule, or executive order
diversity jurisdiction
federal common law

Answer: 3