Teaching at the Right Level (TaRL) is an emerging and widely implemented remedial educational approach that is currently being piloted in many countries. Morocco has been experimenting with this approach since the 2022-2023 school year. This study aims to assess the effectiveness of using the TARL approach as a remedial model in addressing learning difficulties in the convergence of numerical sequences among 2nd-year baccalaureate students in the experimental sciences series in Morocco. To achieve this goal, a written test consisting of 6 questions related to the concept of convergence of a numerical sequence was administered to 60 students in two cycles to measure the efficacy of this approach. Furthermore, it is worth mentioning that the TaRL approach also resulted in a significant decrease in the number of errors between the two evaluation cycles. This indicates that students not only improved their understanding of the convergence of numerical sequences but also were able to correct and reduce their errors through the implementation of this tailored pedagogical approach. This suggests that TaRL was effective in the learning of convergence of numerical sequences in secondary education according to the Moroccan educational system. In this context, it is essential to apply the TaRL approach more widely in the Moroccan education system. The promising results of this study highlight the advantages and effectiveness of the TaRL approach in teaching the convergence of numerical sequences. By applying it on a wider scale, we can expect this approach to benefit a greater number of Moroccan students, by remedying the specific difficulties they encounter in this area.