Repeated school cancellations due to extreme weather can cause students to attend makeup days. Brentwood School District, however, has a plan in place to offset a certain number of cancellations.

"The district has built seven days into the end of the academic calendar for inclement weather makeup days," said Barb Ruhl, assistant to the superintendent. "If there is a situation that exceeds that seven-day mark, then currently the plan is to add on to those days."

With two snow days thus far, the last day for students has been moved from May 24 to May 26, with May 25 set as a records day for teachers.

Students must complete 174 school days in an academic school year, as mandated by the Missouri Department of Secondary and Elementary Education. Brentwood is scheduled for 178 days.

Students and faculty hope the Memorial Day weekend, which usually begins summer break, will not lead into retroactive makeup days.

Maplewood Richmond Heights School District

While repeated snow days can lead schools to incorporate makeup days into their calendars, no such decision has been made in the Maplewood Richmond Heights School District, district spokesman Tom Wickersham said.

"There are lots of options, but we haven't made any decision on any of those," Wickersham said.

Like Brentwood, MRH has used two snow days this year. The district builds in six makeup days at the end of each year, he said. District officials could choose to use some of those days or to turn a professional development day for teachers into a school day.

The Maplewood Richmond Heights School District set aside May 27, May 31, June 1-3 and June 6 as snow days, in the event that they are necessary.

The district's 2010-11 calendar has students in kindergarten through eighth grade scheduled for 176 school days without factoring in snow. It has students in ninth through 12th grade scheduled for 177.