The government is coming under pressure to review its policy on the wearing of face coverings in schools in England. In secondary schools in Scotland, face coverings are set to be used in corridors and shared areas, and head teachers say there's a lack of guidance about whether staff or pupils elsewhere can wear one if they want to. Unions point to World Health Organisation advice which recommends fabric masks for anyone over 12 where social distancing can't be maintained. Some parents at schools already returning in England have told the BBC about their fears.

Official guidance from Public Health England says masks aren't necessary because pupils will be in class "bubbles". Downing Street has ruled out any review and said face coverings could get in the way of communication between teachers and pupils. 

It comes as head teachers in England have written a letter to Education Secretary Gavin Williamson, seen by the Guardian, accusing the government of failing to listen during the coronavirus crisis. The Worth Less? lobbying group, which says it represents thousands of school leaders, told him they felt they were "working in isolation".

Meanwhile, hundreds of thousands of young people will begin to receive their BTEC grades on Tuesday after they were reviewed.

The challengers had their week in the spotlight, now it's the turn of the incumbents. Donald Trump and the Republican Party have begun their four-day convention - a key moment in the US presidential election campaign. 

The theme for Monday night was officially "Land of Promise", but many speakers warned in doom-laden tones what would happen if Americans voted in Joe Biden and his Democrats in November. Chief among them was President Trump's eldest son - Donald Trump Jr. Firebrand speaker, big-game hunter and fierce advocate for his father's platform, read why he may well be even Trumpier than Trump.

In an hour-long unscripted, unscheduled address, President Trump himself - currently trailing behind Mr Biden in opinion polls - accused his opponents of planning to "steal" victory. He warned, without giving evidence, that they plan to "rig" the contest through fraudulent use of postal voting.

Those claims about postal voting are heavily disputed. Mail-in voting is expected to be more prevalent this year due to the pandemic, but there's scant evidence of widespread fraud. Find out more.

Pregnant women and those trying for a baby should limit their caffeine intake, but a couple of cups of tea or coffee a day is fine, say experts. They warn a controversial research paper suggesting there is no safe level in pregnancy is alarmist. The paper, published in BMJ Evidence Based Medicine, looked at 48 studies on the topic. Its author accepts his work can't definitively prove any harm is done by caffeine but argues avoiding it entirely would still be best. The NHS and many other organisations say that's overkill.

Stillbirth charity Tommy's has a caffeine intake calculator to help women keep track of their consumption.

Several papers lead with the row over whether to have Rule, Britannia! and Land of Hope and Glory performed at this year's Proms. "Surrender" is the headline in the Daily Mail after the BBC decided to have them played, not sung - a compromise, it thinks, that's likely to please nobody. The Daily Telegraph says the broadcaster "defied the government" by "effectively censoring the traditional anthems". But the Daily Express has a different take, claiming the BBC has "backed down" by allowing orchestral versions. The lead for the Times is a different skirmish. It reports the government is considering the controversial idea of scrapping tanks in order to cut costs. Finally, many later editions feature pictures of Donald Trump formally accepting the Republican nomination for the US presidency. The Guardian's caption reads "Four more years?"

Nine-year-old Maddie Brookes donated 17 inches of her hair to the Little Princess Trust. The charity gave Teiva Collins, 10, two wigs when she lost her hair during leukaemia treatment. Hear them talk to each other about their experiences. And for nearly 40 years, Mikey Dread has run one of Notting Hill Carnival's most famous reggae sound systems - Channel One. We find out how he feels this year as the event moves online.

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