Sorry have namechanged as was unsure how to post this without it coming across as boastful.
DS in Y7 has settled in very well in secondary school.
The school offers a very structured reward and discipline system.
One part of this is a commendation system, which seems to have motivated him well.
In Autumn term he earned 34 commendations and was given a certificate in Lower School Assembly.
The Head also sent a letter home to us stating how proud she was of his achievements. (received 3 days into Christmas holidays)
In Spring term he earned 72 commendations and again got a certificate in assembly, but as yet, we have not received a letter from HT.
Do you think I should chase this letter, in case it was lost in the post? 
I am actually questioning my motives slightly as I wonder why I need to have documentary evidence that his achievements have been recorded, as we are proud of him without correspondence from the HT. Why am I looking for some sort of acknowledgement of what I know to be true? 