IOWA CITY — Costs across Iowa’s 15 community college costs are rising, while total enrollment is falling — just like at their public and private higher education peers across the state.A new 2020 Condition of Community Colleges in Iowa report released Tuesday shows enrollment of students taking classes for credit and students taking noncredit courses in the 2019-2020 term dropped 1.3 percent and 23.2 percent, respectively.