Hundreds of Croydon teachers went on strike this morning over pay, pensions and "intolerable" workloads.
Most of borough's schools have been affected by the one-day the walkout, called by the National Union for Teachers (NUT).
Some 17 primary schools have confirmed they will shut completely, with a further 46 partially closed.
No secondary schools have been forced to close.
Find a full list of affected schools below.
The NUT called the strike in protest at the Government's planned implementation of performance-related pay, the increase in state pension age to 68 and long working hours.
Many of Croydon's striking teachers plan to attend a rally at Westminister this afternoon.
General secretary Christine Blower said strike action was a last resort for teachers.
She said: "We deeply regret the fact that we have been put in this position. Teacher morale is at an all-time low.
"Teachers regularly work in excess of 60 hours a week which is unacceptably high and unsustainable.
"The introduction of performance-related pay is a way of paying teachers less, not more."
The Government's Workload Diary survey found last year that all teachers had seen an increase in working hours since 2010, with the NUT stressing working days go far beyond lesson time.
Primary school teachers now work nearly 60 hours a week on average, while secondary teachers have seen a six-hour increase in their weekly working hours to 56.
Croydon schools affected:
Fully closed
Cypress Primary School
Elmwood Infant School
Elmwood Junior School
Heavers Farm Primary School
Kensington Avenue Primary School
Kingsley Primary School
Oasis Academy Byron
Parish Church CE Nursery and Infant School
Priory School
Purley Oaks Primary School
Selsdon Primary and Nursery School
Smitham Primary School
South Norwood Primary School
St Mary's Catholic Infant School
St Peter's Primary School
Tunstall Nursery School
Winterbourne Nursery and Infants' School
Partially closed
All Saints CofE Primary School
Archbishop Tenison's CofE High School
Bensham Manor School
Beulah Infants' School
Beulah Junior School
Broadmead Primary School
Christ Church CofE Primary School
Coulsdon CofE Primary School
Davidson Primary School
Downsview Primary and Nursery School
Ecclesbourne Primary Academy
Edenham High School
Fairchildes Primary School
Forestdale Primary School
Good Shepherd Catholic Primary School
Howard Primary School
Kenley Primary School
Keston Primary School
Monks Orchard School
Moving On Pupil Referral Unit
Norbury Manor BEC for Girls
Orchard Way Primary School
Park Hill Junior School
Phil Edwards Pupil Referral Unit
Red Gates School
Rockmount Primary School
Rowdown Primary School
Ryelands Primary School
Selhurst Early Years Centre
St Chad's Catholic Primary School
St Giles School
St John's CofE Primary School
St Joseph's RC Infant School
St Joseph's RC Junior School
St Mary's RC Junior School
St Nicholas School
The Hayes Primary School
Thomas More Catholic School
Virgo Fidelis Convent Senior School
Wattenden Primary School
Whitehorse Manor Infant Academy
Whitehorse Manor Junior Academy
Winterbourne Junior Boys' School
Winterbourne Junior Girls' School
Wolsey Infant School
Woodside Primary School and Children's Centre
Do you support the strike? Tell us your views by commenting below. Are you a striking teacher? Email pictures from the rally to chris.baynes@london.newsquest.co.uk.
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