Prayers will be said at dozens of church services across West Yorkshire today for teacher Ann Maguire who was killed in front of her pupils at a school in Leeds on Monday.
The Catholic Diocese of Leeds wrote to all Catholic churches in the area, asking them to hold prayers for the 61-year-old who taught at Corpus Christi Catholic College for 40 years.
Together they have a combined congregation of around 32,000 people, the diocese said.
A book of condolence has also been opened at the cathedral in Leeds for those who want to express their sympathies.
More top news
A vegan café has reportedly been attacked by a sausage-wielding group in Georgia described as "fascists".
Crystal Palace midfielder Joe Ledley has made Chris Coleman's 23-man squad which will travel to France for Euro 2016.
Roy Hodgson has whittled down his provisional squad to confirm the final 23 players who will represent England at Euro 2016.