Some parents may have questions now that Pfizer's COVID-19 vaccine will become available for the 12- to 15-year-old group.

The Food and Drug Administration extended the emergency use approval to the younger adolescents on Monday and an advisory committee to the Centers for Disease Control and Prevention is scheduled to meet Wednesday to review the recommendation for authorization.

Vaccines could be administered before the end of the week.

Some questions about the vaccine are if it's safe for the age group, if it's the same vaccine administered to adults and if it will be mandatory for students who are in school in September.

Doctors emphasize that the vaccine is safe and effective and that millions of doses have already been administered to adults.

Younger teens would receive the same two Pfizer doses 21 days apart.

"Antibody levels generated actually tend to be higher in the pre-teenage age group. For some reason, the immune system is at its peak actually responding to vaccines in that age group, so it's actually very good to vaccinate children at that age," says Dr. Sunil Sood, of Northwell Health Cohen Children's Hospital.

As for what happens in September, some superintendents say it's too soon to tell, plus, state and local guidance has changed several times over the course of the pandemic.

Nassau BOCES Superintendent Dr. Bob Dillon says he doesn't expect that to be any different moving forward.

"This has been a moving goal post since a year ago March. Would we be surprised if things change between now and September? Absolutely not," Dillon says.

Dillon adds that districts are waiting and hoping for guidance from the state sooner rather than later.