An astipulation is an obsolete term for a stipulation or agreement.
Question doesn't make sense. You can plead guilty AT ANY TIME during a judicial proceeding, you don't have to ask for a stipulation (judge's permission) to do so.
Child support ceases when the person reaches the age of majority for the state in which they reside orthe age theorder of support cites. The legal age for Pennsylvania is 18. Support does not automatically continuewhen an 'adult" child continues his or her education, unless there is astipulation in theoriginal/most recentsupport order that ordersthe parent to do so.