There are growing concerns about the exploding young immigrant population on Long Island.

Officials say thousands of undocumented children who crossed the United States border illegally are now in school districts in the area.

The state assembly held a public hearing on immigrant children fleeing to the United States yesterday in Manhattan.

Officials say about 90 percent of them are meeting parents or family members to escape violence and poverty in Central America.

This year alone 2,200 undocumented children crossed the border and came to Long Island to live. News 12 has learned about 1,200 of them are enrolled in the Hempstead School District.

School Board president Lamont Johnson said Hempstead is unprepared for all these students, and trying to figure out where to put them all. Right now some are standing up in class, or even sitting on the floor.

State officials say another 7,000 children are expected to come to NY by the end of the year, putting Hempstead in an even more severe situation than they are right now.