More currently literature reviews suggests the use of authentic assessment, which aims to involve students to be more responsible with their learning. This article reports the findings of a descriptive study on student teachers' perception on the use of self and peer assessment to give evaluation on planning the lesson and teaching performance in Reflective Teaching Class. There were 100 samples taken randomly from 234 students in a survey using questionnaire and 15 students participating in the focus group discussion (FGD). The finding from the questionnaire shows that they had a very positive perception toward the use of self and peer assessment. Additionally, from the FGD, they conveyed by practicing doing self assessment, they could learn to see self performance deeply, strengths and weaknesses. From peer-assessment, they could learn collaboratively from feedback given by peers how to make a better lesson plan and perform a more effective teaching. Hence, self and peer assessment is considered beneficial for preparing the real teaching practicum and future career development. However, there are some problems challenged them, such as feeling subjectivity in assessing both self or peers, embarrassed and less confidence, and time constraints to make evaluation and reflection in the classroom.