The implementation of authentic assessment method in Curriculum 2013 is good because it encourages the integration of teaching, learning and assessing. Hence, most teachers believe that the students can practice higher-order thinking skills, and criticize tests.  However, it is assumed that in reality, many teachers are not ready to run this assessment yet because of several reasons that should be considered. The study aims to identify the perceptions, expectations, challenges and suggestions of the teachers at SMA Negeri 5 Darussalam regarding to the implementation of authentic assessment. Four research questions were designed, namely, what are teachers perceptions on the use of authentic assessment?, what are teachers’ expectations on the use of authentic assessment? , what are the challenges faced by the teachers on the use of authentic assessment? and what are the suggestions given by the teachers to improve the implementation of authentic assessment?  There was a semi-structured interview procedure employed to address these research questions.  It was conducted in the school. The schedules were the convenient time for the informants. After conducting the interview, a theme-based approach was used to analyse the interview findings. These were achieved by transcribing and tabulating the audio recorded files of the interview sessions according to each interview set. Afterwards, the related main ideas from each interview sets were arranged to yield a common themes. At the end, it is observed that there are three main themes identified. Namely, perceptions and its reality of expectations, awareness of challenges in implementing authentic assessment, willingness and intention to solve the problem to develop the authentic assessment.