They were introduced because of the detrimental effect it had on learning.
Teachers already have too much to do without adding more on because parents want to take their kids out without asking.
By the way, The wife and I work in schools and we are forced to go on holiday outside term time, it costs us nearly double each year.
We still go.
You do but being in that profession you are aware and Contract with what you do. That an teachers - while still underpaid imo/ime - earn relatively well and certainly hearing double (and rightly so) of the NMW. So two households drawing in circa £50k may not feel the percentage based impact of pay in proportion to someone poor(er) for their holidays
