One in 12 primary school teachers says the General Election is set to disrupt nativity plays and Christmas concerts, according to a poll.
They say that the timing of polling day - December 12 - could clash with schools' traditional festive events.
A poll by Teacher Tapp of 1,450 primary school teachers found that 8% said the election would disrupt a planned activity such as a nativity play or concert.
One union boss said it was time to review whether schools are suitable to be used as polling stations.
Geoff Barton, general secretary of the Association of School and College Leaders, said:
It really is time to review whether schools are suitable venues for use as polling stations.