At PS 77 on the Upper East Side, teacher Leslie Blaustein and school counselor Joshua Goldstein hold signs encouraging City Council Speaker Corey Johnson to bring the class size bill to a vote.

Staff members at PS 368 in Hamilton Heights are wearing their school colors in support of smaller class sizes.

Educators at PS 1 in Sunset Park, Brooklyn, demonstrate the benefits of smaller class sizes.

Staff members at PS 159 in East New York, Brooklyn, gather in support of smaller class sizes.

Educators at PS 51 in Hell’s Kitchen show their support for smaller class sizes.

Educators gather outside Beacon HS in Manhattan to rally for smaller class sizes.

Educators join the #OurKidsNeed fight at Maspeth HS in Queens.

A show of support for smaller class sizes at PS 361 in Woodside, Queens.

Educators hold a rally to engage the school community at PS/IS 295 in Rosedale, Queens.

PS 396 in Crown Heights, Brooklyn, rallies for smaller class sizes.

International HS in Brooklyn shows support for smaller class sizes

Supporting small class sizes at the International High School for Health Sciences in Elmhurst, Queens.

Educators at PS 452 on the Upper West Side show their support for smaller classes.

A show of support for smaller class sizes at PS 13 in East New York, Brooklyn.

Educators support smaller class sizes at Harvest Collegiate HS in Manhattan.

Educators support smaller class sizes at PS 310 in Borough Park, Brooklyn.

At PS 177 in Gravesend, Brooklyn, Chapter Leader Antonella Lombardo (left) and her members encourage parents to sign the petition.

PS 205 in the Bronx joins the fight for smaller classes.

Showing support for smaller classes at PS 55 on Staten Island.

Members at PS 186 in Bensonhurst, Brooklyn, wear red for smaller class sizes.

Educators at PS 7 in Cypress Hills, Brooklyn, show support for smaller class sizes.

Educators from IS 218 in Brooklyn are among those who took part in the action.

Colleen Chiauzzi, the chapter leader at PS/IS 295 in Queens, passes out leaflets.

A member hands out fliers to parents outside PS 55 on Staten Island.

Educators from PS 115 in Manhattan put their hands together for smaller classes.