Begging The Question On Labor Force Participation
But that begs the question of why do they want to go back to school? Because it's fun or because it's interesting? Not likely, except perhaps for a small minority. Instead, the reason why they go back to school is because they're unable to find a job and thinks that additional education will enable them to get a job. That may perhaps be a good idea for the people in question, but that doesn't in anyway change their status as discouraged, hidden unemployed as almost all would quit school and immediately take a job if they could (at least assuming it's a steady job).