ESOL classes vary from organization to organization and one thing you may notice is the male to female ratio in a classroom. You might even notice the instructor is a woman.
Male vs. Female
The local ESOL world is dominated by women. A look into student demographics in MCAEL funded classes reveals that there are significantly more women than men.
Some assumptions could be that women feel less inhibited from taking an English class or their schedules might be steadier than their male counterparts who often labor outdoors in construction or landscaping jobs. It might be easier for women to take classes.
Instructors and administrators are often women. Public education K-12 also has a gender imbalance which seems to have translated over into the adult ESOL world. There are many retired school teachers in the MCAEL network who continue on to work in ESOL and this could account for the abundance of women teaching and administering adult English language programs.