A diagnostic test is carried out before the learning process begins. This means that subsequent formative or summative examinations can reliably attest to learning progress, as the learning status before and after learning processes can be specifically compared.
------------
Source:
Customization from: Bandtel, M., Baume, M., Brinkmann, E., Bedenlier, S., Budde, J., Eugster, B., Ghoneim, A., Halbherr, T., Persike, M., Rampelt, F., Reinmann, G., Sari, Z., Schulz, A. (eds.) (2021). Digital tests in the university. Whitepaper of a Community Working Group from Germany, Austria and Switzerland. Version 1.1. Berlin: Hochschulforum Digitalisierung. https://hochschulforumdigitalisierung.de/sites/default/files/dateien/HFD_Whitepaper_Digitale_Pruefungen_Hochschule.pdf