flatter:
"I think it is so wonderful that you have this scheme to motivate the children and it sounds really exciting"
explain:
"I am just a little concerned about X's self esteem, she has worked quite hard to get consist marks.."
modesty:
"I know that some people are able to score wonderful marks but x is more of a mid range achiever and has to work quite hard to stay there."
flatter:
"but the teaching has really worked for her this term and although it may not show in her marks she has worked hard. It is a credit to the teaching really - the amount of thought and effort that goes into these things - as parents we really appreicate it."
explain:
"I was wondering if there was any way she could earn some extra money - she takes school very seriously and really is commited to these schemes but I know that it would be a vital piece of motivation for her."
All that kind of bollocks.
See it as a game - jump through hoops to try and get what you want.