Information and communication technologies (ICTs) in basic education, i.e. K12 education, have often been constrained by sociocultural context and limited to pedagogical aspects, and these innovations have not yet catalyzed curriculum reform as expected. To address this research gap, this study adopted a key-competence-based subject knowledge learning tool, i.e. Smart Learning Partner (SLP), and conducted a quasi-experimental study to evaluate its effects among middle school students. A total of 400 participants in Grade 7 from four schools were followed for a period of two and a half years. The results on online learning engagement indicated that the manipulation generally succeeded in promoting students' use of SLP in the experimental schools. Furthermore, the results on academic performance showed that SLP could not only directly benefit students' learning in the first academic year but also continued to have an effect within the following one and a half years. This study contributes to the existing knowledge in two aspects: first, it extends the use of an adaptive learning cognitive map and shows positive effects in supporting the implementation of the whole curriculum; second, it presents a long-term and large-scale example of successfully integrating ICTs into the key-competence-based curriculum reform in the Chinese context.