The National Curriculum (Moderation of Assessment Arrangements for the Second and Third Key Stages) (Wales) Order 2015 No. 1309 (W. 113)

Acting head teacher

8.  For the purposes of this Order a person is to be regarded as serving as the head teacher of a maintained school if that person is carrying out the functions of the head teacher of the school—

(a) pending the appointment of a head teacher, or

(b) in the absence of a head teacher.