Sebastian Pobel, Michael Striewe
E-assessment systems that provide automated feedback on exercise or exam solutions are a well-known part of modern education. The ability to recognize and utilize domain-specific techniques is an important aspect of the responsibility of such systems. Hence extensibility of e-assessment system with respect to domain-specific features is an import aspect of system design. This paper reports on two successful cases in which an existing e-assessment system was extended with domainspecific features. The extensions concern user interface, exercise generation, exercise evaluation, data formats and incorporation of third-party libraries and thus provide deep insights into various aspects of extensibility in system design.