Since it's several schools she's referring to, isn't she supposed to say "there are" instead of "there is"?

Native speaker’s answer
Rebecca
Absolutely! This is one of the most commonly-made grammatical mistakes by native speakers. The correct way of saying this is "there are" or "there're," but many people make the mistake of saying "there is" or "there's." You should also make note to avoid making this mistake when speaking. Ex: There's a bear in front of our car. (There is + single form noun) Ex: There are bears in front of our car. (There are + plural form noun)