Ms Mitchell is an example of one of the school's past students who is doing well.
During her two years at He Matariki she had a baby girl named Aylah and gained NCEA level 1, 2 and 3 and University Entrance.
Now aged 21, Ms Mitchell is on her way to achieving a national certificate in early childhood education via correspondence from Open Polytech, and is in the process of enrolling in the bachelor's degree programme.
Because of He Matariki's memorandum of understanding with Open Polytech she is able to study without paying fees. This is offered to the students, graduates, and their partners.
"He Matariki helped me get on the track I wanted to get on to be able to succeed as an early childhood teacher."
Terri Cunningham, He Matariki School for Teen Parents manager, was "delighted" after reading the ERO report.
"I think it's a great thing for Whangarei. It's a great resource in the community and it recognises the quality of what's happening."
Ms Cunningham said the personalised learning programmes, mentioned in the report, were a point of difference from other secondary schools and a major part of student success.
"All [students] have different schooling experiences and diverse needs. I look at their record of achievement to date, identify any gaps in learning and find out about their interests and aspirations."