Yes, this is also what I have suggested in earlier papers and grant applications! One should also consider context-dependent retrieval effects, which suggest that it is easier to retrieve information when you are in the same place when learning that information. So for elementary school children this effect may be stronger than the potential effect of novelty, but for university students (who almost never do an exam at the same location as where they were learning) novelty may be potentially beneficial. Some other labs also have shown that elementary school children can benefit from exposure to other types of novelty (e.g., a novel science lesson)