The 63 charter schools in the district enroll 34,400 students. The school district's $2.3 billion budget for 2008-09 includes $320 million for charter schools, a figure that includes all costs, even those that are reimbursed from the state.
Charter schools are independent, taxpayer-funded schools that are free from many of the requirements facing traditional public schools. This academic year, the district is paying $8,088 in charter tuition for every student in regular education and $17,658 for each student requiring special education services.
"We are one of the leaders here in Philadelphia in supporting the charter school movement," Masch said. "But the way in which charter schools affect the finances of the district and how they are funded, we found, is not well understood."
He determined the $105 million cost to the district after analyzing both the savings and extra costs related to charters and factoring in state reimbursements for a portion of charter costs. The state reimbursement rate, which is based on the previous year's enrollment, increased from 28.3 percent in 2007-08 to 36 percent this academic year.
Masch said the district saves some money for teacher salaries and school materials as a result of students who transfer from district schools to charter schools. Overall, he said, the net cost to the district for each of these students is $1,719.
But he said district data show that slightly more than 27 percent of all students in city charters entered from nonpublic schools or had been home-schooled. As a result, he said, the district is paying to educate them for the first time. The net cost to the district for each of these students is $5,707.