This autumn, Acton-Boxborough students are transforming school auditoriums into professional-grade performance venues, offering the community a rich lineup of musical theater, choral concerts, and instrumental showcases. From Broadway classics to student-directed a cappella groups, the district’s middle and high school arts programs are delivering quality entertainment right in your own backyard. The season kicks off with the ABRHS (Acton Boxborough Regional High School) Cabaret Night on November 21 and 22 at 7:00 PM in the high school auditorium. Now in its 31st year, this beloved tradition showcases students in the school’s choral program as they perform a wide range of…