The new academy issued a statement this week after it took action to kick out one pupil and give another pupil a fixed-term exclusion following tip-offs from other students.

Principal Michael Griffiths told Chad: "The incident came to light as a result of the diligence of our staff following up reports from concerned students, and reflects the determination of the whole academy family to root out any involvement in drugs and drug related activities amongst our student body."

• Click the green 'play' icon to see a video report from Samworth Academy by Chad's Tom Pegg.

He has now written a hard-hitting letter to all parents setting out the other circumstances in which pupils could be thrown out of the academy.

They include:

Buying or selling a controlled (illegal) substance.

Using such a substance on or within the environs of the academy site.

Being in possession of controlled (illegal) substances.

Assisting or encouraging others to take part in drug related activity

In the letter he says: "It is our intention that the 'drug culture' which is part of our wider society should not impact on our work at the Samworth Church Academy.

"As well as the harm that comes from the substance itself, there are also damaging and sinister effects of many other drug related activities.

"I know that the vast majority of our students would never get involved in such activity but it is important that every member of the Academy community understands our exact position.

"The academy will always give counselling and advice to students and parents who fear that they might be affected by this insidious problem."

Details of the incident come just weeks after the Samworth Church Academy was opened following the high-profile move to replace the troubled Sherwood Hall School.

The student permanently excluded has not yet made an appeal under the academy's disciplinary procedure so the matter is subject to a final decision.