Tinetti was born in Hokitika on the West Coast of the South Island, the youngest of six children. When she was 11 months old, her family moved to Templeton, just outside Christchurch, when her father Peter Tinetti became secretary of Templeton Hospital and Training School, an institution for people with intellectual disabilities. The family lived in the only staff house, in the middle of the institution, which is where Tinetti grew up.[3] She received her secondary school education at Villa Maria College in Christchurch. She then studied at the Christchurch College of Education, from where she obtained a diploma in teaching in 1990. She became a primary school teacher and union member,[4] teaching in Southland, Greymouth and Tauranga, and spent 20 years as a primary school principal.[3] She graduated from the University of Canterbury with a Postgraduate Diploma in Education in 2013 and a Master of Education in 2016.[5][6][7] She was the principal of Merivale School in Tauranga and has been on the national executive of the New Zealand Educational Institute.[8] She is married to David Merton, whose father Don Merton was a noted conservationist, and the couple have two children.[9] In 2019, she was diagnosed with breast cancer, for which she had surgery, but did not need chemotherapy or radiation treatment.[10]
Tinetti put her name forward for the Labour candidacy in the 2022 Tauranga by-election, after Bridges resigned from parliament,[17] and was confirmed as the candidate on 6 April.[18] The electorate chose the National Party candidate Sam Uffindell.[19]
Minister of Education, 2023
In a cabinet reshuffle by new Prime Minister Chris Hipkins on 31 January 2023, Tinetti was promoted to the number six position in Cabinet,[20] becoming the Minister of Education and Minister for Child Poverty Reduction, while retaining her role as Minister for Women.[21]
On 30 May 2023, Tinetti was referred by SpeakerAdrian Rurawhe to Parliament's Privileges Committee after she delayed correcting a false statement in February 2023 that she had no responsibility for the release of school attendance data. Tinetti was subsequently informed by a staff member about the error but had failed to correct the record until 2 May 2023. Tinnetti claimed that she did not know that she needed to correct the record until Rurawhe raised the matter in a letter.[22][23] In response, Hipkins stated that he still had confidence in Tinetti as Education Minister and would not relieve her off her ministerial portfolio while she was investigated by the Privileges Committee.[24] On 31 May, Newshub reported that the Prime Minister's staff were aware that the Education Minister's office had been delaying the release of official school attendance data.[25]
On 8 June, Tinetti appeared before the Privileges Committee. She expressed regret for misleading Parliament regarding truancy statistics. National Party MP Michael Woodhouse claimed that Tinetti's parliamentary staff were implicated in deciding when the information was released.[26] Woodhouse subsequently apologised for describing Tinetti as a "good girl" during the committee hearing.[27]
On 29 June 2023 the Privileges Committee released its report into the delay. The committee found that Tinetti had not intentionally misled Parliament, but said she had acted with a "high degree of negligence". The committee said Tinetti should formally apologise to the House.[28]
In opposition, 2023–present
In the 2023 New Zealand general election, the Tauranga electorate preferred Sam Uffindell by a margin of 9,370 votes.[29] Following the 2023 election, Tinetti expressed relief that a "weight had been lifted" from her.[30] Tinetti was subsequently re-elected to Parliament on the Labour Party list.[31]