The Queensland Core Skills Test, commonly referred to as the QCS Test or simply QCS, was a statewide test formerly completed by all Queensland year twelve students who were eligible for an Overall Position, and was optional (but beneficial) for tertiary entrance rank students. These ranks were used to gain entrance into tertiary degrees and courses. In-school subject rankings given to students were scaled and moderated using the performance of the subject cohort at individual schools on the QCS test. The QCS test was the only statewide external exam conducted in the two senior years of secondary education (Years 11 and 12). The test was held for the final time on 3–4 September 2019, and will be replaced with external examinations as part of the new Queensland Certificate of Education system.

The QCS Test was claimed to be an achievement test grounded in the Year 12 curriculum, rather than a measure of intelligence or aptitude. Moreover, the test was aimed to be accessible to all students regardless of their subject choices, with general knowledge, vocabulary and mathematics tested only to the common Year 10 level. The test was held over two consecutive days late in Term 3.