I'm sure a lot of it depends on the kid and on the test. My son does not have any test anxiety and has done well on group tests. Do you know the particular tests? Is it a GT screener? Or achievement testing? Is it a format she's seen before? E.g., kids who have all kinds of access to computers at home will likely do better on computerized tests than kids who have never used one.
Do you have any reason to believe your DD won't do well in a group test setting? Does she have any LDs? Some kids can get accommodations to take tests alone.
