1. Probably not. It's more a question of norm obsolescence, which tends to inflate scores slightly.
2. I prefer to use tests that are current, such as the WISC-V, WPPSI-IV, or WJ-IV.
3. Either the WPPSI-IV or WISC-V would be acceptable, though for a high-functioning child, the WISC would probably have a bit of an edge.
4. Only if this has some value for you, such as in curricular planning, or if you suspect a learning difference. With the caveat that age/grade equivalents should not be used as the basis of placement decisions.
