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eatGADS (educational assessment tools: Greatest Assumable Data Set) is the data management and data handling tool used by the Institute for Educational Quality Improvement in Germany (IQB). It has a strong focus on (automated) handling and processing of meta data.

eatGADS uses SQLite3 as a back end and is especially suited for importing data stored as SPSS files. eatDB is used for data base creation and use, haven is used for importing SPSS files.


# Install stable version from CRAN via

# Install development version from GitHub via


The functionality of eatGADS is extensively documented in its various vignettes. If you have questions regarding existing functionality or requests for new features, contact the package author.

# import SPSS data
sav_path <- system.file("extdata", "pisa.zsav", package = "eatGADS")
gads_obj <- import_spss(sav_path)

# see names of variables in the data set

# extract meta data for specific variables
extractMeta(gads_obj, vars = c("schtype", "idschool"))

# extract data for data analysis while applying missing tags and value labels
dat1 <- extractData(gads_obj, convertLabels = "character")