Introduction The aim of this study was to compare the real vocational and social outcome of a young adult CP population that was treated for 2 years at the Kerpape rehabilitation unit, with a retrospective insertion prognosis, taken from the analysis of their clinic record. Material and method Investigators first evaluated functional independence, social autonomy, years of education, and vocational status through a phone survey. A second group of investigators (independent from the first one), studied the medical clinic record assessment in order to determine the clinical type of cerebral palsy (CP). The prediction was based on their clinical judgment, using information about the diagnosis, type of involvement, functional status. Out of 120 selected patients, 43 were eventually included in this study. Results Type of CP: 36; 4% quadriplegia; 24.2, diplegia, 9.1% hemiplegia, 30.3% dyskinesia. Walking ability: 45.5 walking, 54.5% wheelchair. Complete independence: 36.4% for personal care, 18.2% for domestic life. Vocational assessment: 6.1% competitive employment, 6.1% sheltered, 78.8% unemployed, 3% studying. Social autonomy and vocational prediction was right in 72.7% of the cases. Discussion The Intellectual Quotient is the most reliable predictive factor for social and vocational outcomes. On the other hand, the functional independence and walking ability are less predictive for social autonomy prediction. Thus, a greater number of CP adults who are dependent in their everyday life could reach social autonomy. A shortfall in social ability darkens social insertion prognostic, and reduces their quality of life. For CP children, it should be useful to develop specific programs to improve their social ability, in addition to motor rehabilitation, and specific education.