This technical report details the steps, procedures, methodologies, standards and rules that the OECD Starting Strong Teaching and Learning International Survey 2018 (TALIS Starting Strong 2018) used to collect high-quality data. The primary purpose of the report is to support readers of the international and subsequent thematic reports as well as users of the public international database when interpreting results, contextualising information and using the data. A user guide complements this technical report and provides detailed guidance and examples for individuals using the TALIS Starting Strong 2018 data.