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Community Question-Answering (CQA), where questions and answers are generated by peers, has become a popular method of information seeking in online environments. While the content repositories created through CQA sites have been used widely to support general purpose tasks, using them as online digital libraries that support educational needs is an emerging practice. Horizontal CQA services, such as Yahoo! Answers, and vertical CQA services, such as Brainly, are aiming to help students improve their learning process by answering their educational questions. In these services, receiving high quality answer(s) to a question is a critical factor not only for user satisfaction, but also for supporting learning. However, the questions are not necessarily answered by experts, and the askers may not have enough knowledge and skill to evaluate the quality of the answers they receive. This could be problematic …