All in-person classes are at Concord-Carlisle High School (500 Walden St, Concord) unless otherwise indicated.

• Acton-Boxborough High School: 36 Charter Rd, Acton

• Arlington’s Great Meadow: Lexington

• Boch Center: 270 Tremont St, Boston

• College Pond: Weston

• Concord COA: 1276 Main St, Concord

• Daisy Hill Farm: 64 Wood Ln, Acton

• Forest Hills Cemetery: 95 Forest Hills Ave, Boston

• Greenway Conservation: 24 Green Way, Wayland

• Hapgood Wright Town Forest: Walden St, Concord

• Hillside Elementary: 28 Glen Gary Rd, Needham Heights

• Keyes Road Conference Room: 141 Keyes Rd, Concord

• Mirabella Pool: 475 Commercial St, Boston

• Newbury Court: 100 Newbury Court, Concord

• Nobscott Hill: 1 Nobscott Rd, Sudbury

• North Bridge Visitor Center: 174 Liberty St, Concord

• West End Museum: 150 Staniford St, Boston