"Mrs Thom is in charge of worrying - you don't need to", she writes.
The letter has been shared more than 65, 000 times on Facebook with much praise for a yet-to-be-tagged Mrs Thom.
Louise Harry wrote: "I'm very fortunate - my daughter is a year 6 in Mrs Thom's class. We have spent a happy day ticking lots of those boxes. I'm passionate about Bucklebury School, a school that believes in growing the whole child."
While another Facebook user commented on how moving he found the post: "What a wonderful teacher, I started to well up reading this, don't know what's the matter with me, think I'm beginning to get this thing called "feelings" ( not sure I like it much!) thanks for sharing X," wrote Kevin Finch.
- nzherald.co.nz