This paper describes the design, development and qualitative evaluation of a web-based personalized assessment service of an object-oriented programming course at the University of Sousse. The assessment service was integrated in the Personal Reader software, of the University of Hannover and was designed to select specific questions based on the progress and performance in the course of each learner individually. This paper identifies benefits to learners brought about with the use of a personalized assessment service. It describes and discusses a first experiment of this tool. The evaluation was completed with the assistance of a group of ten students with different levels of prior programming knowledge. The students are enrolled in a computer science degree program at the Informatics College (ISITC) of the University of Sousse. The personalized assessment framework is introduced, with a description of its architecture and functionalities. An analysis of learner?s feedback following this experiment is also provided.