Since the OP said that the "decision" on whether to place the child in summer school has to be made by May 6th, and the fact that it was said, "
Mom wants to put the child in summer school due to her grades and struggles throughout the school year." I imagine that child isn't going to be retained back. If that were the case, it would have already been stated somewhere in the past 4 pages that if the child didn't attend summer school, then she would be retained.
As for the interpretation of the wording of the court orders:
"...(Father's Name) shall have visitation with the minor child during her summer vacation from school. The visitation period shall not begin sooner than one week following the end of school for the summer vacation and end not later than one week prior to the start of school in the Fall."
The end of school for the summer vacation for the posters county in Missouri is May 20th. Custody orders follow the school calendar, that's why there is no set "dates" as far as the day school ends for summer recess, and starts back in the fall. All districts can be on different calendars that vary from district to district. Summer school is not considered part of the school calendar year in any district though. As a guide, here is the school calendar from the school district my children attended:
http://www.monroe.k12.mo.us/Middle School Web Page/calendar.htm
Note the end of school date: May 20th. Nothing in the school calander about summer school. And in that district, summer school will start May 31 and go to July 1. So even that is different than the district the OP is talking about. The "end of school for summer vacation" is the last day that school is in session in the regular calendar year, not after school ends, summer school begins, and then summer school ends.
Now, according to the court orders, the father would be able to start his summer visitation no earlier than May 27, 2005. (No sooner than one week after school recesses for the summer vacation.) However, the mother also gets first choice of which 2 weeks she wants. So... if the mother chooses the first 2 weeks immediately following her one week after school recesses, then the child will be in summer school until June 9th. That's it. All the mother gets is 2 weeks, and that 2 weeks would end on June 9th (May 27, until June 9.) Since summer school starts on the 6th of June the child would be go for 4 days (Mon. the 6th thru Thurs. the 9th), and that's legally all the mother can keep her for. After the 9th, her 2 weeks would be over and the child would have to be handed over to dad for his visitation time.
Is it really worth it to sign the child up for summer school in Mom's district, when she'll only be able to go for 4 days because of the court order?
The problem of the wording "If they do, final decisions affecting the child shall be made by the parent who then has psysical custody of the child" is that mom may have the child in her physical custody when the decision has to be made... however, she will NOT have the child in her physical custody after the 9th of June if she takes her 2 weeks at the beginning of the summer. Sure, she can sign the child up for summer school... but after June 9th when DAD has physical custody the ball is in his court.
I'm sorry... but the court order is specific on when the summer vacation starts (end of school for summer vacation) and dad would get the child no later than June 9th if mom takes her 2 weeks first. The end of school is May 20th. Just because mom wants to enroll the child in "extra" school doesn't negate the school calendar.