By augmenting the real world with virtual information, Augmented Reality (AR) provides new possibilities for education. Although AR is frequently applied in educational environments, the value of AR applications in these environments is not yet investigated in its entirety. Additionally, educators face different directions of AR applications, which may differ regarding their potential benefits. To help overcome these challenges, we conduct a systematic literature review to synthesize a set of 25 publications. We identify 14 different benefits and cluster these into six different groups. We use the Five Directions of AR in educational environments by Yuen et al. [1] to further detail possible benefits for different directions of AR applications. Our findings indicate that specific directions of AR applications are more likely to lead to certain benefits such as increased motivation. Future research is needed to investigate the causality between benefits and directions of AR in more detail.