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ILSAmerge 1.2.5

• Added combineStudents() for combining achievement and background questionnaires.
• Added addSchools() for adding school data.
• Added labels to countries and creates variables with country codes and country names.

Remaining issues

• No unzip of PISA and TALIS downloads.

ILSAmerge 1.0.5

• Added ILSArename() for creating comprehensible file names.
• Fixed a problem caused by PIRLS 2021 having an empty dataset.
• Fixed a problem with merging dates for TIMSS 2011.
• Fixed a problem originated from PIRLS 2001 with its multiple capitalization styles.

ILSAmerge 1.0.1

• Added extensive new documentation.
• Added availableILSA() to check which ILSA can be downloaded.

ILSAmerge 1.0.0

• CRAN submission.
• Added PISA and TALIS to ILSAdownload().
• ILSAdownload() connects to GitHub to check for most recent links.

ILSAmerge 0.8.4

• Fixed internal argument checks.
• Added ILSAdownload() for downloading ILSA ‘SPSS’ datasets.

ILSAmerge 0.8.1

• Added justload() to load files in a list but not merge them or save them.

ILSAmerge 0.8.0

• Initial version

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.