Tuition fees and academic (in)activity

We examine the effects of abolishing moderate tuition fees (EUR 500 per semester) in Germany on higher education outcomes. Using administrative panel data from a state university, we find that tuition-free students reduced their academic effort: active students postponed graduation, while low-activity students became more inactive by withdrawing from registered exams. Leveraging detailed student-level data, we analyze the ghost student phenomenon, in which enrolled students show no academic activity. This pattern emerges from strong enrollment incentives combined with a lack of performance standards. After the reform, the share of ghost students increased, reducing the efficiency of public spending on higher education.