Control-value theory of achievement emotions argues that achievement related emotions (e.g., pride, boredom, hope, anger, enjoyment) can be classified in terms of both their valence and the degree to which they motivate achievement related behaviors in educational settings (e.g., negative activating/deactivating emotions, positive activating/deactivating emotions). Within this framework, how can we define 'surprise'? Recent research on the valence of surprise suggests that it can be defined as a mildly negative emotion although the content of surprise is highly contextual.