From the ARPS.ORG website:
Due to Thursday's unexpected weather-related school closing, the new last day of school for all Amherst, Pelham and Amherst-Pelham Regional schools is Thursday, June 17th. Because this closing came so late in the school year, some families have inquired whether the requirement to make-up the day can be waived. The district has been informed by the Massachusetts Department of Elementary and Secondary Education that we are required to make up the lost day. Please note that June 17th will be a regular, full-day schedule at the elementary schools. Amherst Regional Middle School and Amherst Regional High School will follow the High School exam schedule.