It looks like the harder part about getting into culinary college is not becoming admitted but paying for it because it may cost about $15,000 per semester or even more. However, the admissions rate is pretty high (most people who apply get admitted). You can find some more data about admissions into culinary college here:
Generally, you need to have a high school degree or GED to apply. However, as the answer above pointed out, you can begin to learn about culinary art without attending a school.