The revised 2021-22 Common Core of Data (CCD) Preliminary Files are now available. These files are the product of the CCD data collection for the 2021-22 school year. Data are reported at state, district, and school levels as of October 1, 2021. This CCD release includes preliminary Directory (version 0b), CCD School (version 0a), and Student Membership (version 0a) data. The version 0b preliminary Directory data replaces the 0a version Directory data released on May 11, 2022. The CCD School and Student Membership data in this release largely represents the data submitted by the state education agencies as of the April 29, 2022 file submission due date and include detailed data (i.e., student counts by grade, race/ethnicity, and sex) at the SEA level and total membership minus adult education at the LEA and school levels.