Record number from Deis schools progress to third level Feeder School data shows private schools continue to dominate high-points courses Fri, Jan 8, 2021, 00:00 Updated: Fri, Jan 8, 2021, 08:23 The latest data shows a record 64 per cent of students from disadvantaged or Deis schools went to third level last year, up from 57 per cent in 2019. File photograph: David Jones/PA Wire Your Web Browser may be out of date. If you are using Internet Explorer 9, 10 or 11 our Audio player will not work properly. Record numbers of students from disadvantaged schools progressed to third-level colleges last year following the introduction of the calculated grades system for Leaving Cert students, new data shows.