Certain teen's spring fever

• High-class affliction?
• Late high school affliction
• Malady that typically worsens in the spring
• Cause of slacking off at school
• Cause of teen torpor
• "Disease" that afflicts some 18-year-olds
• Ailment similar to spring fever
• Certain drop in motivation

Wiktionary Word definitions in Wiktionary
n. (context US English) A tendency of seniors in high school or college to skip class or otherwise slack off due to a desire to move on, or because they have already been accepted by a college and their further academic performance is no longer as relevant. ...