Universidad Autónoma de Santo Domingo (UASD) has an English program for the bachelor's degree in Modern Language with concentration on English. Students in this program are trained to work in the fields in which English is used, such as education, translation, interpreting, tourism, and so on. For this reason, students must struggle to perform in learning this language communicatively. The purpose of this study was to: (a) Determine the extent English language students perceive their grammatical competence; (b) Assess Students' self-perception about their English grammatical competence; (c) Explore professors' perceptions about students' English grammar proficiency; and (d) Interpret students' perceptions about their classmates' English grammar competence in the Advanced level I class in the modern language program at UASD during Term 2019-1. The data in this research study was collected though qualitative method approach. The study used focus group interviews to collect qualitative information. Only students and professors in Advanced level I classes were included in the study.