Pearson Test of English Academic (PTE Academic) is a computer-based international English language test. Pearson developed PTE Academic in response to demand from higher education, governments, and other customers for a test that could more accurately measure the English communication skills of international students in an academic environment. The purpose of PTE Academic is to measure English language proficiency in the skills of listening, reading, speaking, and writing. To be able to claim that PTE Academic is fit for this purpose, a variety of types of validity evidence has been collected from the various stages of test development through to its administration. The constructs measured are the communicative language skills needed for reception, production, and interaction in both oral and written modes, as these skills are necessary to successfully follow courses and to actively participate in the targeted tertiary level education environment. The three assessment quality criteria discussed in this report are the extent to which the assessment allows test users to make sound interpretations of test-takers' English language competency (validity), the consistency and accuracy of scores (reliability), and fairness of the assessments (AERA, APA, and NCME, 2014). The PTE Academic team carried out studies to collect the validity, reliability, and fairness evidence. This report summarizes the research studies used to collect that evidence.