The Standard Evaluation Protocol (SEP) describes the methods used to assess research conducted at Dutch universities and NWO and Academy institutes every six years, as well as the aims of such assessments. As in the case of the previous SEPs, the present Standard Evaluation Protocol was drawn up and adopted by the Association of Universities in the Netherlands (VSNU), the Netherlands Organisation for Scientific Research (NWO), and the Royal Netherlands Academy of Arts and Sciences (KNAW). These organisations have undertaken to assess all research conducted within their organisations between 2015 and 2021 in accordance with this SEP. This document is intended for all who work with the Standard Evaluation Protocol, whether they be researchers, the heads of research groups, policy officers, members of boards, or members of assessment committees. After describing the aims of the protocol and the assessment criteria in the first two chapters, the document goes on to provide all the information needed to organise ... : Amended version, 2016 ...