"UGSI" is an acronym that stands for "undergraduate student instructor". Synonyms for this term include "undergraduate teaching assistant", "peer tutor", "student teacher", and "teaching fellow". All of these terms refer to undergraduate students who assist in teaching and guiding their peers, whether it be through leading discussion sections, grading assignments, or offering extra help during office hours. These individuals are often valuable resources for students who may feel more comfortable seeking help from someone who is closer in age and experience. While there may be slight variations in job responsibilities between different types of UGSIs, they all play an important role in enhancing the educational experience for both themselves and their peers.