http://www.schoolandhousing.com is the best source for finding the actual school attendance for a property address. Just enter the specific address you are considering.
Terri is absolutely correct; I should have posted "http://www.schoolandhousing.com is the best ONLINE source for finding the actual school attendance for a property address."
The truth of the matter is that you should call the School District Office and provide the address of the home you are considering in order to CONFIRM which schools will "pull" from the address. School Districts routinely perform "student load balancing", which means while a particular home may be located in a certain school attendance area, it may be years before your child actually goes to the school within the assigned attendance area.
You can read more about this issue here: http://www.trulia.com/voices/Home_Buying/Heard_about_Mission
Here is the district location. Upon first glance it looks like Wilcox. Always call the school district. Even if you use an on line resource there may be enrollment changes or issues.
All the Best to you.