Child Support Calcs

Does the judge have any discretion in CS calculations. For instance if a child stays with one parent every weekend from end of school to late Sunday night does that only count as 2 nights? I am not asking if the judge will count as 3 nights, just asking if he has discretion or must follow the letter of the law.
Thanks!

The court is able to consider other factors if one party gives notice of intent to deviate from the Guidelines. However, in most typical cases, judges will follow the Guidelines strictly.