Chatbots have transformed educational practices, and ChatGPT represents a significant development in this domain. However, more research is needed to determine how user perceptions influence the overall user experience with ChatGPT. To address this gap, this study investigates the role of ChatGPT, a revolutionary artificial intelligence -- (AI)-powered chatbot, in educational settings by investigating its impact on user experience from the perspective of students. It focuses on key perceptions, including human-like personality, human-like empathy, and ChatGPT efforts, and their influence on the user experience. It also explores how ChatGPT's efforts and usage depth affect user credibility, which in turn shapes the overall user experience. Data from 516 students who have used ChatGPT for academic assignments are collected through a questionnaire, and seemingly unrelated regression (SUR) is employed for analysis. The findings contribute to the literature on AI chatbots and user experience in three ways: by offering empirical insights into ChatGPT's role in education, by identifying key perceptions and their impact on user experience, and by capturing multiple dimensions of user experience for the design and implementation of ChatGPT as an educational tool. By shedding light on the interplay between user perceptions and user experience, this study provides valuable guidance for educators and developers aiming to optimize the use of ChatGPT in educational contexts and to ensure its effectiveness as a trustworthy and supportive learning tool