The headmistress of the school at the centre of the Myleene Klass birthday gift row has reprimanded the star and other parents involved for their behaviour.

Questioning their values in her weekly parent newsletter she said: “How I wish I could focus on your daughters’ education and not in responding to media trivia.

“How many times this week have I been asked to comment/act/intervene..do something! Mutual respect and tolerance..we actively promote them - do you?”

Her comments come after Myleene, whose seven-year-old daughter Ava is a pupil at the school, mocked fellow parents in public by tweeting screenshots of emails about class gift collections entitled “bonkers” and “schoolgates”.

The correspondence, from a fellow Year Three parent, requested £10 donations for birthday presents for two girls to go towards buying a Kindle for one and a desk for another.

Myleene also posted a screenshot of her sarcastic reply stating that for her birthday Ava wanted “a real, live unicorn” and adding: “I will be collecting Unicorn money via her book bag, in the playground or at getwhatyourgivenandendthismadness.com.”

But the headmistress was not amused. Her reprimand continued: “No more unicorns. And as my granny would’ve said, if you can’t tweet anything nice, don’t tweet anything at all.”

The row had flung the £3,000-a-term private school into the centre of a media frenzy and national debate, after Myleene’s tweets had gone viral being shared thousands of times.

As reported on our website, furious parents confronted Myleene in the playground and wrote letters of complaint to the headmistress.

In the newsletter on Friday, the headmistress referred to the “fundamental British values” promoted at the school.

She said: “We WILL challenge opinions and behaviours that are contrary to these values. At (our school) this is actually quite straightforward as our pupils are young, receptive, and eager to learn. It is so much more difficult when these girls observe attitudes and behaviours that fly in the face of our values.“