An administration report says Mayor Bill de Blasio’s plan to expand full-day prekindergarten would reach 53,000 New York City children who need it by September.

The Wall Street Journal reports that by the 2015-16 school year the program would be available to 73,000 children who need it.

The Journal obtained a copy of the report from the mayor’s office on Sunday. The mayor told the paper that the report “proves once and for all” that the plan can be implemented effectively “right away.”

The report provides the mayor’s most detailed analysis for a free, full-day pre-K program for every city 4-year-old. He’s proposed a tax on the rich to pay for it.

The Journal says the report leaves unanswered such things as where the new classrooms will be housed.

(AP)