After last week's mass shooting at Marjory Stoneman Douglas High School, parents have been scared to send their children to school--so much so, they've considered homeschooling options. 

It's understandable the students of Stoneman Douglas are unsure whether they will ever be able to walk back through those doors. 

"I know a lot of students, who are my friends, are looking into homeschooling options already because nobody, even if you place us into a different school, nobody will feel safe," said student Hannah Carbocci. 

The potential threat of another mass shooting has become too real for too many. 

Tiffany Stalker has chosen to take her four children out of three different Manatee County Schools and enroll them in online classes. Her decision was made final after a threat was made her oldest son's high school this week--a threat law enforcement is treating as credible. 

"It's his high school that could potentially be next," Stalker said. 

Florida Virtual Schools said it has received a few calls from parents about switching their children to online classes but overall, they can't give us exact numbers. 

"We've gotten a couple of calls, it's not been volumes of calls of parents feeling that they don't want their child in school at this time," Dr. Diana Greene said. 

The district said it is trying to ease parents' fears, with schools across the county stepping up their police presence, but some parents say it's not enough. 

"The risk isn't worth the education they're getting at a public school," Stalker said. 

The school district said student absences are excusable for the time being if parents don't feel comfortable sending their children to school. 

Meanwhile, the support continues to grow for students. 

George and Amal Clooney are donating $500,000 to help pay for a march calling for gun control.

The "March for Our Lives," planned for next month, is being organized by five students who survived the attack. 

The march will take place in Washington and other cities around the nation. 

Clooney said in a statement that he and his wife Amal are inspired by the "courage and eloquence" of the young men and women from Stoneman Douglas High School. 

Clooney also said they're making the donation in the name of their children Ella and Alexander. The couple plans to participate in the March 24th event.