I'm 100% with you on this. My least-bad solution now is to administer 60 minute tests in 90 minute class periods. 50% extra time fits BUT depends on me getting the regular time kids to turn in tests while their peers are still working.

Last year, my don't-spotlight-the-kid-with-extra-time technique was to pre-arrange a break at the 60 minute point. I told the ET kids to walk down the hall and back before resuming the test. Worked out well AND gave a quick brain break.