However, hundreds of police officers at the school put some ease and comfort in their minds.
"I can imagine what was going through her mind going back to campus," said parent Seth Rand whose daughter is a junior at Douglas.
Safety was not a concern for him today, but he knows in the wake of this tragedy, something needs to be done when it comes to security.
He plans to put the pressure on school leaders to make that happen.
"Just the perimeter security. Just the ability to get on campus. Stoneman Douglas is a 45-acre property that had one school resource officer. That's impossible for them to guard that kind of facility with a short fence," said Rand.
He will be at city and school board meetings to push for improved security.