New Zealand - Learning at Home- Tips for Parents
'In New Zealand, Year 7 is the seventh year of compulsory education. Children entering Year 7 are generally aged between 10½ and 12' - Wikipedia
Approximate Equivalent Years
Year 1 - Junior Infants
Year 2 - Senior Infants
Year 3 - 1st Class
Year 4 - 2nd Class
Year 5 - 3rd Class
Year 6 - 4th Class
Year 7 - 5th Class
Year 8 - 6th Class
Please see attached document to help compare ages / school class standards internationally.
This may be a useful reference for looking at resources on US and UK educational websites.