The environment plays an important role in the learning of languages especially Igbo language. Environment as used in this study means all the classroom conditions that facilitate teaching and learning. This analysis, therefore, seeks to find out the relationship between students’ perception of their classroom and their academic achievement in Igbo language. Both human and material resources as well as interaction and attitudinal behavior in the classroom setting make up the classroom environment. In order to carry out this study, two research questions were posed and a null hypothesis was formulated. The design of the study is a correlational survey. The population comprised the entire SSII Igbo language students from five schools drawn randomly from the entire schools in Udi Local Government Area of Enugu State, Nigeria. The mean, standard deviation, Pearson’s product moment correlation coefficient and t-test statistic were used in analyzing the data. The result revealed that there is an average perception of Igbo language students on their classroom environment. Also, there is a significant relationship between their mean perception and their academic achievement. Based on the findings, some recommendations were made which include that Igbo language teachers should be made aware of the influence of their environment on the achievement of students through seminars and workshops.