With much attention being placed on the use of Twitter and other social media in the classroom, educators are grappling with the question, "Is Twitter a valid tool to increase classroom effectiveness?" Yet, many responses to this question come from anecdotal and case-study-based information. The present study offers a preliminary quantitative analysis of Twitter in the classroom. A survey-based experiment (n = 144) was conducted to measure student perceptions of teacher credibility, immediacy, and content relevance alongside instructor Twitter-use. Results indicate significant, positive correlations between student Twitter-use and positive perceptions of teacher behaviors. These results indicate that Twitter may serve as a valuable tool to supplement more traditional forms of course instruction. (Contains 1 table.)