Which school to choose in Costa Del Sol?

Hi, myself & husband along with our 10 year old daughter, are seriously considering a move to the Costa Del Sol in the next 10 months. I'm at present looking at schools and would appreciate any info regarding choosing State or International. At present I'm leaning more towards International, though I really want her to learn spanish, I think at her age it would be too much for her to cope with being placed in a spanish school. Then again there's the costs of international schools, they seem very expensive.
Any info would be much appreciated.
Kindest Regards
Jacqui