Hmm... Interesting question.If Pokemon were real, I would set fire to my school.(I'd make sure it was empty first though!) I would then escape on the back of a Rapidash, and if anyone tried to stop me I would set fire to them too.!
Then an authority with a high level Charizard trained in a police school would stop you.
IMO, Pokemon would be used as partners and helpers in jobs, like in building. In careers like a chef, there would be psychic Pokemon to help manage the food, fire Pokemon to cook the food and water Pokemon to provide the water. A Pokemon as a teacher's assistant would be an Alakazam (to help the students) or a Machoke (to keep order)
I've been thinking about this myself because I'm mentally working on Marana and their ways of life and government. The main characters like Aspen go to school and one of the necessary classes they take is Pokemon physics where they learn the basics of Pokemon, which ones are dangerous and how to take care of them.
But if Pokemon were around during the early days of civilization, we know Machamps and strong Pokemon would help build the pyramids in Egypt, fire Pokemon would provide fuel to steam-operated machinery and also melt metals and glass, smart Pokemon who could speak human languages and were taught law could be government assistants or even be a stand-in President or ruler of a country.
To find out truly how Pokemon would change our lives, we'd have to find out the tools and other things we needed to live, how exactly they were made or formed or even discovered and replace the machines that some Pokemon have the same ability as.
It's an interesting thought, especially for a deep fanfic or for creating a country, region or world. Stuff like this really interests me, though it may give headaches to other members.
If Pokemon were real though, I'd use a Rapidash to ride to places that were too far, a Scyther to help me cut the impossible brush in my backyard, Pidgeot to ride on and to deliver quick messages for I dont talk on the phone, water Pokemon like Squirtle to help my mom maintain all of our grass and a Sandslash, a Mr Mime and a Scyther so we could safely grow bamboo on our property.