So this all makes sense, let me preface that we live in Canada.
DS is 16, his in his second to last year of high school (Grade 11). He came home and asked me yesterday offhandedly "Mum, can I please have $3000?" figuring I would laugh him out of the room
Curious, I asked him what he wanted it for. It seems that the major school trip next year (March 2016) is to Italy. I invited him to sit down and we started to talk about cost, budgeting, etc... I spoke to DH about it this morning, and he is in agreement. This is a fantastic opportunity, and with this much lead time, we can add it specifically into the budget for him.
So... Here is my question. DS's father, my XH, has not been consulted in this. We have worked out the budget without any contribution expected from him.
Would I be unreasonable to let him know about the trip and ask if he would be willing to contribute (not expecting anything, though )?