Rachel is correct it is the Wiseburn District. My son currently attends Juan de Anza Elem. in that district and its great, very highly sought after district. The neighborhood of Del Aire is nice, mid size home with 1 car garage is typical but you can find a few exceptions. Good Luck
Shaping Spaces Group - Interior Design
To answer your question no. The more expensive/sought after area of Holy Glen/Del Aire is the Wiseburn school district.
Please let me know if you have other questions. There are some fabulous buys in Holy Glen at the moment. I would be happy to send them to you.
Good luck with your house hunting.