HHHCSD is a suburban school district with 9 schools. For the 2026-2027 school year, classes begin September 2 and end June 25. Half Hollow Hills' motto is 'Perfectly blending academics, athletics, and the arts,' and the district enrolls over 7,300 students across nine schools on Long Island. The calendar also notes several religious observances (Yom Kippur, Eid al-Fitr/Superintendent's Conference Day #3, Eid al-Adha) for awareness — school stays in session on these days. This calendar includes 3 early-release or half days, 1 remote/asynchronous day — useful to know when planning childcare.
Also known as HHHCSD.