Understanding verbal irony is a relatively late-developing skill and one that is challenging for children. This is not surprising as successful irony comprehension requires going beyond the literal meaning of the words. Several explanations have been proposed for the late development of irony understanding, for example, theory of mind development, executive functioning, vocabulary, and metapragmatic knowledge. In the present pre-registered study, we explored how teaching metapragmatic knowledge in classroom settings affects 10-year-old children’s processing and comprehension of written irony (n = 41) compared to children in a control group (n = 34). In the study, the participants read ironic and literal sentences embedded in story contexts while their eye movements were recorded. They also responded to a text memory question and an inference question after each story. In the training condition, children were taught what irony is and what cues to look for. In the control condition, children were taught about reading comprehension. After training, the reading task was repeated. The results showed that children’s irony comprehension improved after short metapragmatic training, suggesting that metapragmatic knowledge serves an important role in children's development of irony comprehension. However, the eye movement data showed that training did not change the strategy children used to resolve the ironic meaning. The results suggest that metaparagmatic knowledge can be easily trained in classroom settings. The results could be used to augment literacy teaching in schools and to help refine theories of irony comprehension.