Acton-Boxborough Community Education is holding activities each day for students in kindergarten through sixth grade during February vacation week. Students can sign up for just one day or all four, between Tuesday, Feb. 18 and Feb. 21. Activities will be held from 8 a.m. to 5 p.m. at the Parker Damon Building. The cost is $80 a day for one or two days; $180 for three days; or $210 for four days. Lunch is included. To register, visit https://registration.xenegrade.com/abschools*.