We wanted to know when half-term fell this year, so checked the Powys County Council web site. It informed us of the following;
Non-pupil days may be varied into alternative dates within a school year, other than pupil school days, subject to a minimum of one term's notice to the Heads of Schools and Inclusion. If schools wish to vary a non-pupil day into a pupil day, this change can only operate on a catchment basis and must involve all the schools in a particular high school catchment area to avoid increasing the Authority's transport costs. Up to 3 of the 7 non-pupil days may be converted into twilight sessions, subject to a minimum of one term's notice to the Heads of Schools and Inclusion, with one non-pupil day being deemed to be the equivalent of 3 twilight sessions of 2 hours each. The calender allows for 188 school days and 7 non-pupil days in line with legal requirements.
Well that's clear enough then.