We examined the teaching skills for reading scientific materials needed by science teachers. We compared the views of teaching skills for reading scientific materials of science teachers both in service and in training. The result of text mining for free description of the teaching skills of both groups showed that, whereas trainee teachers emphasized language ability as a teaching skill (for example, the ability to image the contents of a text), current teachers emphasized teaching the curriculum contents (for example, the ability to correct scientific knowledge). Such a divergence in views of teaching skills for reading suggests that it is important to make trainee teachers learn reading and comprehension skills in science teacher training.