Greens senator Lee Rhiannon has angrily denied she has twice been censured by her colleagues and says she feels bullied.

The ABC understands Senator Rhiannon's colleagues are considering expelling her from the party room because previous censures have not changed her behaviour.

But Senator Rhiannon has furiously denied that.

"The level of anonymous commentary pushing out lies and fabrications about me is extraordinary and upsetting," she said.

"I am feeling bullied and harassed.

"There are several reports today claiming that I was censured by the Greens party room when I lost the higher education portfolio in a 2015 portfolio reshuffle. It is not true. I was not censured.

"Similarly the assertion that I was censured this year for 'my role' in the emergence of Left Renewal is not true.

"There was no censure, and I have never been a member of Left Renewal and had no role in its emergence."

She said someone is anonymously feeding misinformation to journalists.

"I know that Greens members and our MPs condemn such behaviour," she said.

"It is clear this is not just about how the Greens handled Turnbull's Gonski 2.0 con job. It is a vicious attempt to destroy my reputation.

"If the deceitful leaker thinks their tactic will drive me from Parliament they are wrong."

Senator has been faithful to Greens policy 'at all times'

Senator Rhiannon is accused of breaking the Greens party rules and acting in bad faith by failing to tell her colleagues that she had decided to campaign and vote against the bill, while other senators were still in official negotiations with the Government.

A Greens party room meeting yesterday did not reach a decision on what, if any, punishment should be imposed, and another meeting is likely to be held this week.

Even if Senator Rhiannon was expelled from the party room she would remain a senator — effectively becoming an independent Green.

Senator Rhiannon has denied that she thwarted the Greens' negotiations with the Government over school funding.

"It was the Turnbull Government's decision to do a deal with the crossbench senators that killed off negotiations with the Greens," she said in a statement.

"At all times my actions on education have been faithful to the Greens' policy and process."

The Greens' Left Renewal faction has also expressed its dismay at the treatment of Senator Rhiannon.

"We are disappointed in the party room's eagerness to cruelly and publicly undermine NSW's Greens senator for simply taking the position of her party, and a policy the Greens took to an election, into Parliament," it said in a statement.