This is a public school, so there is no cost. You must live in the district that attends this school and be able to provide some sort of record verifying (utilities bill, lease agreement, etc). To check if your home is in the district that attends this school, visit here: http://search.lausd.k12.ca.us/cgi-bin/fccgi.exe?w3exec=schfinder0 and you can find out more information about the school at their website nestleweb.com.
I am also a Tarzana resident and work with real estate in the area. If I can be of any further help, please feel free to contact me.
Keller Williams Realty
#1 Buyers Agent KW Los Angeles Region