All states and outlying areas provided data for this survey. However, state agencies vary in their data collection and reporting systems, with resulting inconsistencies across states. Values for prekindergarten students and staff that were missing and not reported elsewhere by the states were imputed. Missing prekindergarten student counts were imputed first, by calculating an average ratio of prekindergarten students to total students minus prekindergarten students for reporting states, and then by following steps d and e above. Totals and subtotals are footnoted in the tables when one or more items included in the total are imputed or adjusted.
Several states collapse two or more categories of staff into one.
In these cases, NCES disaggregates this number by distributing the reported amount to the several categories based on the average distribution of these staff in other states. NCES made no adjustments or imputations to the high school graduate, high school equivalency or other high school completion data except in New Jersey. This includes secretarial and other clerical staff, and persons whose activities are concerned with support of the teaching and administrative duties of the office of the principal or department chairpersons, or central office administrators. Membership includes students both present and absent on the measurement day. A regular diploma recognizes that the recipient has completed a prescribed course of studies at the secondary school level.