HARRISBURG, Pa. -

The Pennsylvania Supreme Court has ruled that parents who enroll their children in kindergarten are subject to the state's compulsory attendance law.
 
The case involved a Snyder County woman who was fined because her twin 5-year-old daughters had accumulated several unexcused absences.
 
Jennifer Kerstetter argued that since kindergarten is not mandatory in Pennsylvania, truancy law doesn't apply.
 
But the court ruled Monday that once parents ``opt in'' to the public school system by enrolling their children in kindergarten, they are obligated to send their kids to school.