Jordan School District has joined its neighbor, Granite, in noting lower than expected enrollments in year-round schools. The trend worries administrators, who may have to trim teaching staffs if classes don't fill as anticipated.

Granite earlier announced its summer enrollment in year-round schools was 360 below expectations. Jordan, which has 18 schools on the year-round schedule, said 294 expected students didn't show up when the schools began in July.Administrators fear the lower numbers mean families are leaving the southern part of Salt Lake Valley, probably because of economic conditions.

The districts will lose a portion of their state financial support if the enrollment slip continues into the regular school year, due to begin in late August.