Career Central is a great place to start for writing your cv. CareerCentral is an online digital platform that you can log into using your school username and login.
You can build up a personal profile with your own unique skills, strengths and interests, as well as keep track of jobs/careers that interest you in your Job Bank. Jobs are also linked to current advertisements on TradeMe, which can really help you explore the employment prospects in a particular field. There is a great CV Builder and a cover letter template you can download to word.
Alternatively, Careers NZ have lots of information and tips about writing a CV and cover letter as well as templates should you wish to use them.
Most school students won’t have heaps of job experience so a good template to use is a Skills Based template. You can look at examples and download a blank template for you to complete here.