Good news for teachers and Students!!!Office 365 is free for students and teachers. It usually costs $99.99.
Students and teachers are eligible for Office 365 for Education, which includes Word, Excel, PowerPoint, OneNote, and now Microsoft Teams, plus additional classroom tools.
All you need to get started is to enter a valid school email address in the URL below.
New Zealand: https://products.office.com/en-nz/student/office-in-education
Might be available for other countries.