Teamwork assessment creates a more comprehensive educational experience by broadening the diversity of skills that students develop. Developing teamwork skills is particularly important due to a recognised skills gap among science graduates. This study investigated student perceptions of developing teamwork skills during their undergraduate science degrees. A mixed methods approach was used, which included the analysis of both quantitative and qualitative online survey data. The key findings showed that, although students understood the importance of developing teamwork skills for their future, a substantial proportion did not feel sufficiently prepared with these skills by their science degree. To develop teamwork skills, more students valued working in teams during laboratory sessions, team sports and informal study groups than non-laboratory based formal teamwork assessment. In support of previous teamwork studies across disciplines, the most cited factors contributing to poor teamwork experiences were difficulties scheduling meetings and unequal contribution among team members. This study indicates pedagogical improvements that may enhance the teamwork experience of students during assessments.