MP Jess Phillips is crowd-funding to take "thousands of kids" to the Treasury and sing the Baby Shark song in protest at what she has claimed are education cuts forcing schools to "close early".
The Labour member for Birmingham Yardley said she was planning to fund a "huge campaign" day on Friday, taking youngsters to Westminster to the offices of the Department for Education and the Treasury, as well as Downing Street.
Mrs Phillips' GoFundMe webpage had already reached £6,200 of its £10,000 target on Tuesday, less than 24 hours after it first launched.
On the website, she said the Birmingham school her 10-year-old son Danny attends, was being "forced to close early on Fridays because the school can no longer afford to stay open for a full week thanks to government cuts to education".
Mrs Phillips added her son’s school could "no longer afford" to support disabled and special educational needs children, adding they "may have to leave" as a result.
She added: "In Birmingham where I live there are 15 other schools in this position.
"Since I called this out, parents all over the country have been getting in touch to say that their kids are also being failed in this way."
Mrs Phillips said: "The Government has failed in the most basic job it has to provide schooling for all of our children five days a week.
"Together with the Save Our Schools group, I am organising a huge campaign day where we will take thousands of children to Westminster on a Friday.
"At 1pm, the time our schools have to close, we will be leaving our children at the Department for Education, the Treasury and I will leave my son and some of his friends with special educational needs at Downing Street."
She said: "It is the basic job of the Government to educate all of our children for five days per week, we intend to make sure they do this.
"If they will not do it in our local schools they can do it in their offices."