The series comes from the 'Current Population Survey (Household Survey)'
The source code is: LNU04023008
Source: US. Bureau of Labor Statistics
Release: Employment Situation
US. Bureau of Labor Statistics, Unemployment Rate: Enrolled in College Part Time 16 to 24 years [LNU04023008], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/LNU04023008/, July 1, 2015.