1. Start with English make it mandatory for everyone in the whole country.
2. Spanish or any other language besides English should be voluntary.
That being said it is cool to learn a second language. I took Latin, Italian and French and had a ball learning them. Speaking a second language also gives one an advantage as well. If i had to do it all again though i would take Cantonese and Mandarin for a few reasons the least of which is so i can understand my wife if she makes fun of me in her native tongue ;)