Hello, I am operating a homestay in British Columbia, Canada and my homestay company has asked me if I would consider being a "legal guardian" of a teenage boy from Korea - in addition to providing the basic homestay service. This would be for two high school semesters (almost 1 year). They have offered to pay us $150 (Canadian dollars) more per month than our base homestay fee for this extra "legal guardian" responsibility which they have indicated would include going to the meet-the-teacher meetings at his high school and making sure he is doing the correct homework assignments and generally being more responsible for his well being.
If he becomes sick I would be the one to make sure he receives the attention he needs such as a visit to the clinic or hospital. Generally I would be looking out for his well being more than if I was only providing the basic room and board for the homestay. Being a legal guardian would almost be like having another child in our family.
I am happy to be the legal guardian and I feel I can fulfill this duty well because we are already experienced parents of children. However I am not sure what the standard "rate" for being a legal guardian should be. Most likely I will accept, but initially, I thought that the extra responsibility of being a legal guardian would be worth more - such as $350 to $450 more than the base homestay fee - of course I could be mistaken on the standard rate for this because I have never acted as legal guardian before. Yes, maybe $150 is a standard rate for this kind of extra responsibility but I do not know. What are other legal guardians being paid for this type of responsibility?
What is considered an average fee or a "reasonable" fee for this extra responsibility of acting as legal guardian? Is $150 more per month too low, too high or average?
PS Our base homestay fee is $850 (Canadian/month) for a teenage child which includes room and board. The additional legal guardian fee would be $150. Therefore the total would be $1000 per month. I don't question the basic homestay fee (the $850) - I only question whether the extra $150 is average for acting as legal guardian because I have never been a legal guardian before.
We were also concerned about legal issues such as what would happen if the child became injured in our home and his parents sued us but I have been re-assured by the homestay company that isn't an issue because they couldn't sue us unless we were extremely negligent parents - and we are not negligent parents at all and so we are confident there is no chance we could be sued - besides - we don't have much money to sue over anyways

Thank you for any suggestions

Mike