Mathematics is one of the fields that has important role in the 21st-century thinking because mathematics involves the process of logical and systematic thinking to solve problems. This makes mathematical competencies need to be developed through learning and integrated into knowledge, skills, and attitudes. When learning has facilitated the development of 21st-century mathematical competencies, the assessment must also be able to photograph it. This research aimed to find out whether the lecturers of the Mathematics Education Study Program have conducted a 21st-century mathematics competency assessment. This research used a qualitative approach with the phenomenological method. The data were collected using in-depth interviews with each participant. The research participants were 20 lecturers from Mathematics Education Study Program who came from 12 provinces in Indonesia. Data analysis was performed by using the help of ATLAS.ti 8 software to analyze participants' transcripts and documentation, formulate important phrases or sentences, formulate meaning, bring themes up, and be integrated into in-depth descriptions of the phenomenon. The result showed that lecturers of the Mathematics Education Study Program have not focused on the 21st-century mathematics competency assessment. The assessment of each mathematical competency was only done globally and not carried out in detail about each of the competency indicators.