I used to work for a School in LA where you will get the best value for money anywhere!!
Group 3 Aviation- 1(818) 994 9376- the web site is
www.group3aviation.com
The owner is from the UK and will make sure you get good treatment
It is a fun area to fly in as you can be out of LA in 5 minutes and they have a great practice area in a dried up river bed nearby.
Get in touch if I can help with anything