They might (big might) do all the pieces that they have to do by law (hearing and vision screenings, etc) and possibly accept the outside testing. The fact that you already have a 504 means that the child already has a known disability. I used to work for a district that on occasion if the outside tester had a good reputation and the report was up to our standards ----well that was money saved by not doing that eval and just approve that report and add a short addendum that they had reviewed it and any additional thoughts or recommendations. ...they would make note of it and when the three year re-evaluation came up would make sure they didn't want to give the child the "works" at that time.
But one can only hope.
