Enrollment in Minnesota charter schools rose by more than 4,000 students in 2007-08, the largest annual increase since charters began in 1992.

And for the first time, there are more charter schools and charter students in the suburbs than in either Minneapolis or St. Paul.

Those are among the findings in a report released Thursday by the Center for School Change at the University of Minnesota.

Center director Joe Nathan said there are several reasons for charters' rising popularity. "I think that a number of parents feel that smaller schools are safer schools and their kids are getting more individualized attention," he said. Also, "there's a very distinctive program in some of the charters that's attracting people."

Charters are public, tuition-free schools that operate independently — and often compete with — the traditional school districts in which they are located. They are often smaller than district schools and offer a particular academic focus — Chinese language immersion, for example, or performing arts.

Since 2001-02, enrollment in traditional district schools has declined in Minnesota from 831,535 to 796,757. During the same years, charter school enrollment increased from 10,162 to 28,026, the study found.

There were 27 charter schools in St. Paul in 2007-08 and 31 in Minneapolis. For the first time, the number of charter schools in metro-area suburbs — 32 — surpassed that of either core city. Total enrollment in these suburban charter schools was 7,791 students, the center calculated, more than in either Minneapolis or St. Paul.

In Minneapolis and across the state, charter schools also enrolled a higher percentage of low-income, English Language Learner and minority students than traditional school districts, the study found. That was not the case in St. Paul, in part because of the high number of suburban students attending St. Paul charters, Nathan said.

Minnesota had 143 charter schools in 2007-08. Another dozen are expected to open this fall. Nationwide, more than 1.2 million students attended 4,303 charter schools in 2007-08, according to the National Alliance for Public Charter Schools.

Doug Belden can be reached at 651-228-5136.

On The Web

The charter school report can be found at centerforschoolchange.org.

Charter Growth

K-12 public school enrollment in Minnesota

2006-07 2007-08

Statewide

District 804,557 796,757

Charters 23,689 28,026

St. Paul

District 40,034 39,050

Charters 5,578 6,137

Minneapolis

District 36,337 34,314

Charters 6,460 7,755

Source: Center for School Change, University of Minnesota