Facing administrative burdens, the State Department of Education contacted the Department on January 15, 1982, requesting that it be allowed to adhere to the early July directive. On January 22, 1982, the Department refused and imposed a March 15, 1982 deadline for schools to obtain SSNs from the participant children’s families. Between February and the March deadline, the State Department of Education assessed the collection deadline’s impact, finding the larger school districts unable to make timely adjustments. California’s six largest school food authorities claimed 335,000 children would be denied meals if the deadline were enforced. The Department could not definitively answer the State Department of Education’s questions about the Privacy Act’s applicability to the SSN collection procedure, so the Department gave it an extension until April 15 to acquire a legal opinion on the issue. The collection process in California continued.
The Secretary, on May 25, 1982, promulgated proposed rules implementing discretionary changes in the school meals program, and published a proposed text of 7 C.F.R. § 245.6, adding the SSN disclosure requirement. The latter, accompanied by proposed regulations defining “adult” and “household,” see 47 Fed.Reg. 22,703-07 (1982), stated that the Lunch Act had been amended to require:
that the social security number of each adult household member be given as a condition of eligibility ... [and] may be used for verification of the information on the application. Failure to provide social security number information shall result in a denial of benefits.
Id. at 22,707. On June 15, the Department published revised income eligibility guidelines, effective July 1, 1982, see 47 Fed. Reg. 25,752 (1982), and a “final” interim regulation on July 23, 1982, having received 109 comments on the proposed regulation. 47 Fed.Reg. 31,848 (1982). The Secretary made that rule effective on publication so as not to have delay disadvantage State Department of Education authorities.
B. Care Program
As with the school meals program, the Care Program’s annual cycle begins in July as states distribute material to local agencies regarding operations, to allow yearly redetermination of eligibility under current • federal criteria. See 7 C.F.R. § 226.9(a), § 226.24 (1984). OBRA’s effective date falling outside the normal eligibility cycle led to informal communications between the State Department of Education administrators and the Department. By unpublished directive, August 21, 1981, the Department issued revised income eligibility criteria, and summarized OBRA’s changes, including the SSN collection provision.
State Department of Education administrators, relying on the informal communications with the Department, had issued directives to Care Program sponsors which did not require reprocessing of applications to add SSN information for the 1981-82 school year. It published, after OBRA’s enactment, income eligibility guidelines on September 1, 1981, for Care Program sponsors, and on September 23, sent out revised applications for sponsors who had waited until after enactment to make changes, along with sample letters to parents.
On November 27, 1981, the Department published interim rules in the Federal Register which, among other things, restated the requirement that the Care Program applications request SSNs of participating households’ adult members and advised states that the applications should meet the Privacy Act’s notice provisions. The rules, amending 7 C.F.R. § 226.23, were retroactively made effective as of September 1, 1981, on the basis of what the Secretary felt was “good cause.” The notice explained that comments, as a basis for the final rule, would be accepted through January 26, 1982.
After comments, the Department published the final rule on August 20,1982, see 47 Fed.Reg. 36,524-51 (1982), including a statement about the use of the SSNs. The final rule added a prototype Privacy Act disclosure statement and instructed state