Sentiment analysis (SA) is used in multiple disciplines to evaluate textual data and has become a popular topic in educational research, with a growing body of published work. SA has been employed in educational research to investigate student satisfaction, attitudes, topics of concern, or to evaluate instructors' teaching performance. However, there has been little discussion of applying SA as an assessment approach to evaluate teamwork textual feedback (i.e., students rate their teammates by writing comments on them) in engineering. The purpose of this research is to investigate the possibility of using SA as a method for evaluating collaborative textual feedback (e.g., comments) from students and to show its potential in assisting teachers in evaluating teamwork dynamics in their classrooms. Teamwork is a key skill in engineering. With the rising complexity and magnitude of the challenges engineers handle, teamwork has become increasingly important. This is reflected in the Accreditation Board for Engineering and Technology accreditation student outcome criteria 3.5, which specifically highlights an ability to effectively function on teams. Engineering education literature further demonstrates the importance and the responsibility of faculty involvement in the development of effective teamwork. To assess teamwork functionality, instructors can distribute a survey among teams for team members to provide feedback about each other. This kind of feedback is helpful not only for that specific team and class but also for identifying broader, systematic trends in engineering student teams. Often the textual feedback is gathered at the end of a semester, and evaluating these responses can identify useful insights for improving teaching approaches. Unfortunately, in many cases, such surveys also can go underutilized. Large amounts of textual data often are not compatible with traditional analytic methodologies, but we claim that these huge amounts of textual data have the potential to deliver unique insights to educators and researchers. We investigate SA as a potential method for analyzing a large corpus of student feedback responses about their team members and test this concept using a sample from 53,088 student responses from a first-year engineering course. The purpose of this research is to propose SA as an assessment approach to evaluate students' teamwork comments. According to research, potential issues that first-year engineering students frequently face when working in teams include teammates not performing their share of their work, tardy teammates, domineering teammates, and some team members being excluded from major tasks. SA has the potential of identifying team members' biases, and it can provide quick feedback and provide real-time insights into the teamwork environment (e.g., positive, neutral, or negative environment). Research shows that conflicts between team members are common, and constructive feedback is critical in the development of students both as individuals and teammates. Furthermore, insights from SA have the ability to augment instructor evaluations of teamwork. By analyzing survey comments based on the comment writer and the individual about whom the comment was made. [ABSTRACT FROM AUTHOR]