ESL English schools in city of Guanajuato?

Hi, Brenda,
I taught English in Guanajuato in 2010 and early 2011. Smaller to Middle-size schools are constantly opening and closing every semester. A good resource is the University of Guanajuato's Language Dept. for info on school openings. Once one opens up, they'll attempt to hire their full cadre of teachers within the first week or two so knowing when schools open is essential. Also, the size or experience of a school often has no bearing on how much it will pay.
Speaking of pay, expect a significantly lower pay than in GDL although the difference is made up by lower prices in rent, food, etc... Many language teachers take jobs teaching in Leon - a 45 minute bus ride away.
Best of luck,
David