Group assessment is the kind of assessment that lecturers usually apply in university. The students divided into some group and should solve the problem in team. This research aimed to investigate the students’ perception on the use of group assessment for speaking skill aspect. The focuses of this research were to find the students’ perception on the advantages and disadvantages of using group assessment. This research conducted at ELED of private university in Yogyakarta. This research employed qualitative method and use descriptive qualitative as research design to present the research finding. The participants of this research were three students of batch 2014 at one of private university in Yogyakarta. The researcher used interview to collect the information. The finding of this research showed those using group assessment has five advantages and three disadvantages that students usually face. The advantages of using group assessment were adding knowledge, improving students’ speaking skill, improving students’ confident, building students’ leadership, and knowing each other. The disadvantages of using group assessment were losing control of the class, teachers’ ineffective time management, and unequal member contribution.