Many of the modular FTOs keep and display IR test results showing student names, dates and pass/partial/fail results. I don't know any integrated schools that do this. Pass rates can be very misleading because they do depend heavily on the background of the students the schools service. In the old days of CAA licenses those that specialised in ex-military students had a sparkling pass rate whereas some integrated schools had comparitively poor pass rates.
Make sure you compare like with like. Nowadays there should be little difference between modular IR rates following full approved courses and the integrated schools' pass rates because they both relate, in general, to students with 150 to 200 hours experience.