I admit I'm the first parent to phone/write to the school if I'm not happy about about something - partly because I work FT and and don't get the opportunity to have a quick word with the teacher or HT who hovers on the playground.
But sometimes I really want to say thank you, or say how well the schools team played during a weekend match (when it's been organised by outside club, so school staff don't attend)
I really am thankful for the little things the staff do, and am very proud of how the DC represent the school and play as a team. At DS1's high school I can email, but the primary school don't do emails.
I'm wishing there was a way of giving the school positive feedback - I know I'm not the only parents to feel like this, and would like to suggest something to the HT, but not sure what.