Task: Determine the appropriate intensity class for the tweet, reflecting the level of emotion E experienced by the user. 0: no E can be inferred. 1: low amount of E can be inferred. 2: moderate amount of E can be inferred. 3: high amount of E can be inferred.
Tweet: I'm also upset at my incorrect use of a comma. #grammar #struggle #hesitation #backtoschool 🎒📚
Emotion: fear
Intensity class: 