Paper has been a convenience medium of communicating information, accessing information, as well as delivering and receiving lecture. However, as time changes, the mode of communication and instructional methodology takes a paradigm shift. This has resulted to the use of paperless classroom. Paperless classroom is the use of computing and communication technologies to replace the traditional method of teaching and learning in the classroom. It offers speed and ease of using electronic means in delivering lecture to a large number of students which is cost effective to students and lecturers. Consequently, schools are using computing technologies to ease the cost and stress of using paper-based classroom. Notwithstanding, despite the benefits of using computing technologies in facilitating paperless classroom, there is a poor usage of computing technologies towards promoting or achieving a paperless classroom in library schools in Rivers State, Nigeria. However, colleges, universities and schools have different approaches when putting in place the paperless classroom. Thus, the study investigated computing technologies and paperless classroom in library schools in Rivers State. Two objectives, two research questions and two hypotheses guided the study. The study adopted a correlational research survey design. The population of the study was 45 lecturers in library schools in Rivers State. Census sampling technique was used to select the respondents. Questionnaire was used to gather the data. 37 copies of the questionnaire were found valid for analysis. The data was analysed using mean scores and standard deviation for research questions and Pearson Product Moment Correlation (PPMC) to test the hypotheses. The study revealed that there is a significant relationship between mobile computing, cloud computing and paperless classroom in library schools in Rivers State. The study recommended that library schools management should as a matter of policy implement the use of computing technologies in library schools in Rivers State.