King's College acknowledges that not all students have had a positive experience at the school following the Sam Uffindell scandal earlier this year, and invited ex-students back to talk about their experiences with bullying.

Uffindell, who won Tauranga's byelection earlier this year, was stood down from National's caucus on August 9 after two allegations of bullying and intimidatory behaviour in his youth surfaced.

The majority of his offending occurred during his time at King's College.

In a statement, Simon Power, Chairman of the Board of Governors at King's College, said that they acknowledge that among their Old Collegian community, there are those who suffered bullying.

He also maintained the school has made significant strides over many years to improve the culture at the College and to encourage student wellbeing and argued the efforts have already been effective.

As a part of these efforts, King's College is inviting Old Collegians to speak about their own experiences with bullying at the school.

"There are many reasons why this invitation is important, including assisting in the healing of Old Collegians and to ensure the College learns lessons, so that these situations will not be a repeated experience of current or future students at the College", Power said.

"King's College is genuine in this invitation and welcomes any Old Collegian to come forward if they have anything that they would like to talk about from their time at King's College".

Sam Uffindell with National leader Christopher Luxon. Photo / Mark Mitchell

On August 8, Stuff revealed Uffindell had been asked to leave Auckland boarding school King's College for physically beating a Year 9 (third form) student while Uffindell was in Year 11 (fifth form) in 1999.

Aged 16 as a Year 11 student at the exclusive Auckland boarding school, Uffindell and three others jumped on the then 13-year-old boy and began beating him with what was believed to be unscrewed wooden bed legs.

It reportedly left the victim with severe bruising and significant trauma.

"It was one of the silliest, stupidest things I've ever done. I really regretted it, and I do really regret it still," Uffindell said at the time.

Following that, RNZ revealed another set of allegations of bullying and intimidatory behaviour from a former flatmate of Uffindell while the pair were living in Dunedin while attending university.

The woman claimed Uffindell was an aggressive bully who once pounded on her bedroom door, screaming obscenities until she fled through her window.

A report into allegations against Uffindell exonerated the new Tauranga MP - and he was been reinstated to the National Party caucus.

The investigation did not substantiate any allegations of bullying outside of Uffindell's time at King's College, the National Party said.