But many fear it could get cut from the next budget.
They gathered on the steps of Queens Borough Hall and plan to stay front and center as Mayor Bill de Blasio and the City Council fine tune the budget.
The protesters are all students taking the classes, and they are afraid the program they rely on so much may soon fall through the cracks.
"When we're talking about English classes, we're also talking about how people form networks with each other," said Amy Torres, of the Chinese-American Planning Council. "How they find peers in their neighborhood."
Michelle Dou works part time and came to the U.S. just last year. Three days a week, the mother of five takes classes to perfect her English.
"I need to support my children," she said. "My family all was taught English. Only me was tight Mandarin and Cantonese."
The mayor's executive budget for 2018 does not include $12 million for adult literacy programs, and the group is demanding he pay for those classes if he wants to make good on his promise of being pro-immigrant.
"Nearly 6,000 individuals in the city would be kicked out of their classes when the budget is closed at the end of June," said Kevin Douglas, of United Neighborhood Houses.
More protests are planned in the future, with one at Bronx Borough scheduled for next week.
As for the mayor, a City Hall spokesperson said the needs of this community will be considered as part of the ongoing budget process. City officials claim they are doing their part, however, including $16 million set aside for immigrant legal defense services.