This study was carried out in order determine the current mode of lecturer assessment at Kampala International University WC so as to come up vvith a better assessment method. Descriptive, explanatory and evaluative research designs were adopted in order to come up with valid and reliable information. Information was obtained from both primary and secondary sources. Secondary data and questionnaires were used to get information from the respondent. Research findings revealed that the current mode of assessment was manual where by students could be picked at random to carry out the assessment on paper. This had disadvantages for example, many students could not get a chance to carry out the assessment, and there was no validation to ensure that only legitimate students assess lecturers among others. Basing on the above, there was need to design and implement an online lecturer assessment system for IOU in a computer-oriented environment of today that is more up to date and reliable in terms of technology in order cope up with the changing environment. The objectives of the study were achieved using tools like interviews, observation and existing literature. Data Flow Diagrams and Entity Relationship Diagrams were used in the analysis and design of the system. The technologies used in the implementation involved PI-IP, HTML, and the Database Management System (DBMS) with MySQL embedded in Warnp web server.