Botswana

(1) Where any question as to the interpretation of this Constitution arises in any proceedings in any subordinate court and the court is of the opinion that the question involves a substantial question of law, the court may, and shall, if any party to the proceedings so requests, refer the question to the High Court.
(2) Where any question is referred to the High Court in pursuance of this section, the High Court shall give its decision upon the question and the court in which the question arose shall, subject to any appeal, dispose of the case in accordance with that decision. (Sec. 105)

An appeal shall lie as of right to the Court of Appeal from any decision of the High Court which involves the interpretation of this Constitution, other than a decision of the High Court under section 69(1) of this Constitution:
Provided that no appeal shall lie from a determination of the High Court under this section dismissing an application on the ground that it is frivolous or vexatious. (Sec. 106)