Be very interested to hear what ingredient budgets others involved in school meal production work to and whether its junior/senior or both. And whether food is from scratch, prepared by a 3rd party or a mixture.
Feel free to email if you don't want to post details.
I'm not sure of budget but of the three schools mine have attended all primary made from scratch. As part of the tour I insisted on speaking to the staff in the kitchen. They tend to use 3663/Brakes stuff and fruit and veg from tesco or independents.