The start of the school year was already a heavy asthma day for the clinic in a Carroll Gardens, Brooklyn building that houses both the Brooklyn New School and the Brooklyn Secondary School for Collaborative Studies.

One by one, students trickled in to see nurse practitioner Alison Wolfson, known by some patients as “Dr. Abby.”

“Dr. Abby is my friend and I really like coming here,” said first-grader Carmen Simons.

“Usually in my old school, it's like you have an asthma attack and they just call your parent and you leave,” said eighth grader DyAsia Perez. “But Abby, she actually helps you and gives medication to make sure you have what you need to be okay to go back to class.”

The school-based clinic, run by Long Island College Hospital, provides full pediatric services, from asthma management to reproductive health for older kids. But now there's growing concern the schools could lose the program.

The hospital plans to pull out of the clinic, along with three others it operates in the borough, to help trim millions of dollars in debt.

“Some of our patients don't have health insurance, so by us being here they are able to get care free of charge where otherwise they wouldn't be seeing anyone,” said Wolfson. “They would have no healthcare at all.”

“The thing that is so sad for me is if we lose LICH clinic, we lose something that has taken years to really build up,” said Brooklyn New School principal Anna Allanbrook.

The school has more than 1,200 kids in preschool through 12th grades, and about 45 to 50 of them visit the clinic each day.

LICH has already upset the community by planning to shut down its maternity ward and selling off long-held properties.

School principals say they've been given a December 31 deadline for when the hospital will cut their services.

Parents are circulating a petition addressed to the state health department to keep the program going at least through the end of the school year.

“For us, it's just really been an inspiring example of the public school system doing something right and we hate to see that squandered,” said parent Jessica Dineen.

A LICH spokesperson said it has no plans to discontinue services until the schools find other hospitals or vendors that can take over.

But teachers, students and parents worry those new health services won't be the same.