Los Angeles students are back in school today after all 900 plus campuses were closed yesterday. That decision came after an anonymous email threat was sent to the school board late Monday night. 

"I think it's important to take this precaution based on what has happened recently and what has happened in the past," interim LAUSD Superintendent Ramon Cortines said at a press conference yesterday.

But we know now that the threat was not credible, which raises the question: Did the school district do the right thing in keeping hundreds of thousands of kids home?

LAUSD school board president Steve Zimmer said today, "The decision that was made yesterday wasn't made lightly. But I really appreciate that we're facing criticism of how much we erred on the side of safety of kids."

If the question is "what was the level of error of how much the district should have been focused on safety," Zimmer said, "I'm comfortable with that. I would be very uncomfortable if we hadn't gone far enough."

And if the same threat came in today, Zimmer added, "I would do exactly what I did when the threat came in in the middle of the night. And that is, evaluate it step by step, get it to the right folks to analyze it and get the best possible analytics in real time... to get us the best information possible to make the best decision on behalf of kids that we can make."

To hear the full interview with Steve Zimmer, click the player above.