Preventing bad outcomes for teens and their offspring was the impetus behind confidential care for reproductive health. Requiring parental involvement created an obstacle to the provision of necessary care.
Parents want their child with severe disabilities to be accorded the same respect a healthy child gets, including a physical exam in the ER to diagnose and perhaps treat a minor illness unrelated to his or her impairments.
For a medical school admissions committee to consider social networking activities during the selection process without informing candidates would violate the principles of transparency and consistency and could lead to worthy applications being rejected.