Educational institutions' are likely to witness 11-13 per cent growth in total income in the current fiscal year and the next, driven by rising enrolments and fee hikes across segments as schools and colleges capitalise on steady demand and improving realisations, a report said on Monday. Operating margins will be steady at 27-28 per cent as these institutions will incur higher staff salaries and other related costs, Crisil Ratings said in a report. With rising enrolments, the institutions will also incur capital expenditure to create additional capacity and improve infrastructure, the report said, adding that credit profiles will, however, remain stable as strong cash flows will limit reliance on external debt. "Overall income is expected to log healthy double-digit (11-13 per cent) growth over the next few fiscal years, mainly supported by fee revisions, along with growth in enrolments, albeit at a modest rate. "Fee escalations are primarily driven by higher inflation, especially