My daughter is currently in kindy and I asked if she wanted to get her teacher and teachers assistant a gift for the last day of term. In my opinion I am not sure what her teacher has really been teaching her as she can never tell me what she has done in class ie what is she up to in the alphabet etc so I am not overly keen on getting her something. Other parents think the same as me when it comes to the teacher. I do on the other hand really like the teachers assistant and more than happy to get a gift for her.
Depending on what state you are in, Kinder is a bit different, so it could be your expectations are a bit too high? I'm in Victoria, and wouldn't be phased at all if this was the case with my kids - ie not being taught these academic skills - kinder is more about play based activities and the social side. If it was prep (ie First Year of School) then it would be different.
I also have a child that never shared with me what she'd done each day, but it turned out she had a valid reason (Aspergers), so I try not to judge some
teachers too much, based on my child's non-interest and lack of her own feedback in school.
I had considered a christmas in a jar recipe thing but as her teacher cannot eat gluten I am not sure what recipe to do. I had considered doing something like bath salts or something like that but unsure. The other thing I had considered was a day spa voucher.
If you went to the trouble of doing a gluten free version of Christmas in a Jar, she may not use it - if she is gluten free due to Coeliac disease, then she might be extremely strict with what she eats, so may not use something that isn't manufactured and has the ingredients labelled.
I'll give you some gluten free food suggestions, since I'm experienced in what's out there.
Cadbury Roses and Milk Tray are gluten free. I try to avoid sending chocolates in on hot days. http://www.cadbury.com.au/products/gluten-information.aspx
Big W sell Grans fudge (comes in different flavours, also can get coconut ice) that's labelled gluten free. Some packets placed inside a nice Christmas box might be suitable?
In the health food section of supermarkets there are some nice chocolate items that are gluten free (eg Rocky Road at Safeway).
I noticed today that Safeway has a gluten free christmas pudding. Not sure of the price, but it would be from $10 to $20. (Brand was Macro)
Jelly Belly jelly beans are gluten free - last year Big W had a large boxed pack for Christmas for about $20. Not sure what they have this year, but they or other stores might have special jelly belly packs out for Christmas. My kids and I LOVE the different flavours from these jelly beans - they are not like normal jelly beans.
If you went with a food item, it's very important that it stays in it's packet (ie don't tip inside a fancy jar) as this will ensure the item is checked for safety (ie packet is available for checking of ingredients) and is more likely to be enjoyed by the recipient.