The Australian Greens have called on federal National MPs join the NSW branch in publically advocating for the full six years of Gonski funding.

Australian Greens spokesperson for schools Senator Penny Wright commended NSW Education Minister and National Party member Adrian Piccoli for his speech in support of the full Gonski funding at the NSW Nationals conference.

"As Mr Piccoli says, funding the full six years of Gonski will benefit country schools the most," Senator Wright said.

The Australian Greens' plan to  invest more than half a billion dollars in mental health services across rural and regional Australia will save lives and build stronger communities, say Senators Penny Wright and Peter Whish-Wilson.

Launching the party's rural mental health policy in Launceston today, Australian Greens' mental health spokesperson Senator Wright said the policy was based on recommendations sought directly from rural communities.

"Years of under-investment in rural mental health continues to cost lives all across country Australia," Senator Wright said.