An all-time high of 154,000 children in New York City’s public schools — nearly one in seven — were homeless during the past school year, according to data released Monday as the city reckons with a worsening affordability crisis.

Advocates for Children of New York, the author of the report, put the shocking new data in context this way: If the homeless students had their own school district, it would be one of the 20 largest educational systems in the country .

“There are now more students who are homeless in NYC than the entire Dallas public school system,” said Jennifer Pringle, a project director focused on students in temporary housing at Advocates for Children.

The consequences for a child’s education are profound. “This year alone, we’ve worked with families whose children a

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