Providing educational feedback has been widely acknowledged as an effective method to assist student learning. To offer feedback for a large student cohort, educational researchers started developing artificial intelligence (AI) systems. Though the existing AI-driven feedback achieved certain success, many concerns still exist during the deployment of AI (e.g., privacy, AI explainability and accountability) and further shape the untrustworthy barriers between the educational stakeholders' needs and AI efforts. To reduce the barriers, it is necessary to identify the concerns based on the principles of trustworthy AI before the development of automated feedback. Therefore, in this paper, we aimed to tease out the concerns raised in the existing literature. In particular, we mainly discuss trustworthy AI trough five dimensions -- i.e., acceptance, explainability, accountability, fairness, and privacy -- to shed light on the future design of automated feedback.