A question if I may.
You stated originally that you are doing this as a favor for you wife, which indicated to me that she was somewhat in charge there AND realized that you were not a professional.
The requirements you say the school desires indicates they are really looking for professional results and shots.
So, by doing a favor for your wife, what does she gain from the school? Was she put in charge of the photography requirements? Is she really just looking to save the school and/or parents a little extra money? I agree with the previous poster about this event becoming more challenging with great expectations. ( I guess what I am hemming and hawing about is why didn't they just go with a professional photographer to begin with?)
It's one thing to do a favor to your wife and have people somewhat accepting of semi-pro or serious amateur photography. It's another thing altogether to meet these expectations while at the same time not cursing yourself for the obvious time and effort you will no doubt spend on this project.
I agree with all of the above. The first thing I thought when I read the expectations for this shoot is to "RUN!!!".
It's one thing to take some shots to help out and quite another for the "professional" portrait package that they seem to be expecting from you.
This has all the hallmarks of a disaster in the making. The expectation is that you are going to be able to provide this level of service, with out the equipment or experience while photographing one of the most difficult age groups for portraits, oh and by the way you are doing this for FREE!
Something is seriously out of whack here. I'd say the expectations are too high for your current situation. Unfortunately, the person from the school that is setting this scenario has no idea what's involved and they are expecting WAY too much from you.
I hate to be the bearer of bad news but this is going to end badly because:
1) You're going to spend
Hours and Hours coordinating all aspects of this.
2) There will be X % of parents who are not happy with the results and they will feel free to let you know that it is YOUR fault. In reality, perhaps "Boopsie" was having a bad day and wasn't able to pose nicely, or the parent will have a problem figuring out how to order prints and YOU will be the one that has to deal with them. Perhaps "Boopsie's" outfit was wrinkled or her hair wasn't right and now we need to re-shoot this....I've heard them all.
I could go on about what the parents will do to you but you really don't want to know.
If I were you I'd take the bull by the horns.
Be honest about what you can do/want to do/are willing to do.
Make sure you communicate that clearly to who ever is in charge.
Then you have to watch that they convey the truth about what you can do accurately. I have heard of situations where one thing was said and then a whole other steaming pile was forced on a photographer.
With these types of expectations from the school, this is a job for a Professional photographer, ideally one who specializes in kids and can offer the level of service that the parents are going to demand for these photos.
If you decide to go through with this as per the school's expectations I wish you the best of luck. It will be a real eye opener dealing with the school, the kids and their parents.
Stay away, stay FAR AWAY!
Marlton Mom
PS I'm sorry if I sound harsh but you are really getting your self into something and I'm trying to help you benefit from my years of experience and observations concerning this exact sort of thing.