What does ISO mean?

The Insurance Services Office (ISO) conducts evaluations of a city’s fire protection capabilities to determine a classification known as a Fire Suppression Rating. This is commonly referred to as a city’s “ISO” or Protection Class. ISO works with the Texas State Fire Marshal’s Office. In the ISO rating scale, a lower number is better: one is the best possible rating, while a 10 means the fire department did not meet ISO's minimum requirements. For more information, click here: Greenville ISO

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1. What does ISO mean?
2. What is the City of Greenville's ISO rating?
3. How do I become a firefighter?
4. Can I get a speaker to come visit my school / event to talk about fire safety?