Image copyright Oxford City Schools Image caption Students in the Sixth Form Centre at Oxford High School
A senior school in Oxford has admitted that students had been drinking.
An investigation will be launched by the Oxford City Council’s education committee after they heard the claims from parents.
A school source said the complaints came in from parents of teenagers who take the London Electricity Sunday bus to college.
Schools minister Nick Gibb said the allegations were “extremely serious”.
They alleged students were bought alcohol by tutors and taken from the venue to a riverside party on Sunday night.
A report to the committee, by chief executive Joe Gibson, detailed the claims and said further investigations were being launched.
Education committee chair Malcolm Windsor said: “The allegations made by parents of students are extremely serious and I am clear that I want answers about what has happened.”
There have been several similar allegations in recent years.
In May, school bosses at Tenterden College in Kent apologised after claims that students had partied too hard, resulting in injuries to some of them.
At that school, parents were informed of the activities, messages were sent out and the university’s football club offered drink vouchers for those who had decided to go home early.
In January, six students at the Gurkha College Girls School in South Gloucestershire were removed from their school after allegedly smoking cannabis at an off-campus party.
In 2016, three Years 12 students at Bicester College in Oxford allegedly died after drinking cannabis oil, which they had ingested at an off-campus party.
When their parents received warnings about their actions, two of them withdrew their children from the school while the third went back to school and completed her diploma.
At the time, pupils’ parents protested in Parliament.
Cape Town High School, in East Sussex, apologised after students and staff were allegedly at risk of contracting HIV when tested for chlamydia.
In April, the parents of a Year 13 pupil claimed he was pressured into taking an ecstasy tablet at a party in West Sussex.
On Thursday, BBC Radio Oxford’s John Briggs said that a mother was told she would need to pay £1,000 fine if her son was expelled from West Oxford High School for drug-taking.
However, her son, who was released on bail, had refused to take drugs.