This PDF document summarizes Pennsylvania's laws relating to minors and alcohol:
Quote Quoting Consumption of Alcohol by Persons Under 21
Currently, 36 states and the District of Columbia havespecific laws in place prohibiting the consumption of alcohol by individuals under 21 years of age. In Pennsylvania, exceptions are provided for the use of alcohol as part of a religious ceremony. A violation of this law is a summary offense punishable by parental notification, a driver’s license suspension of 90 days and possible alcohol evaluation and education or treatment at the offender’s expense. A repeat violation is punishable by alcohol evaluation and education or treatment at the offender’s expense, parental notification, a fine of up to $500,and a driver’s license suspension of 1 year. A subsequent offense is punishable by alcohol evaluation and education or treatment at the offender’s expense, parental notification, a fine of up to $500, and a 2 year driver’s license suspension. A diversion program is available for first time offenders, whereby the court may offer an alternative adjudication program consisting of public service, counseling, job training, or a self-improvement program