HK made some excellent points about allowing the school to pay for testing or having it done privately. Since we went through this recently, a couple of points to add:
School testing:
-May utilize a test that is otherwise useless elsewhere (requiring retesting of child later with another test if child needs a school change, etc.)
-May utilize a test that offers a poor estimate of your child's abilities
- May utilize a test with ceilings that are too low for your child (resulting in a score that is an underestimate of the child's true abilities)
Many of these problems can be avoided with private testing.