I've gotten two calls from this number to my car's On-Star phone. The car & phone are new ( purchased in August ) and the number was activated the day we took delivery. I do not answer the call but took note of the number. The number is for Providence Rhode Island Schools..! I suspect I was assigned a phone number previously "owned" by someone who registered it with the school system.
from http://www.providenceschools.org/learn-about-ppsd/contact-us-by-department
* Family & Community Engagement (Parent Call Center), 401-456-0686