In this article, the researchers discuss the implementation of the Ferrari, Lynch, and Vogel Listening Test (FLVLT) to two STEM areas: Mathematics and Computer Science. The goal of the present study was to assess the improvement in students' mastery of critical listening skills and how listening can help students to retain information. After students were introduced to the subject matter, two specifically tailored listening assessment tools were designed. Pretests and posttests were then administered in an introductory algebra (n = 29 students) and a network fundamentals course (n = 13 students). These tests were administered approximately four weeks apart. The data show that the FLVLT model is reliable for judging students' critical listening skills and curricular knowledge. Furthermore, a 12% and 20% improvement in students' ability to match the content pattern to a spoken message was found. In addition, a correlational analysis suggested that improvement in critical listening skills helped students' learning.