Questionmark is a software company based in the United States, founded in 1988, that specializes in providing assessment solutions for various industries. With a workforce of 51 to 200 employees, the company focuses on ensuring the legal defensibility and security of tests and exams. Its published documents include practical guides and best practice recommendations aimed at helping organizations create assessments that are robust, reliable, and fair. Notably, the company has produced materials addressing the importance of legal certainty in assessments, particularly within a European context, while also emphasizing the need for proper documentation to defend against potential legal challenges. Additionally, Questionmark provides detailed information on the security of its on-demand services, outlining compliance with regulations across different regions, including Australia, the EU, the UK, and the US. The company’s commitment to best practices in assessment design and delivery is evident in its resources, which serve as a guide for organizations seeking to enhance the quality and defensibility of their assessment processes.