The score comparability of different subjects in Gaokao reform has always been a big concern in recent years. Experience in some provinces shows that standard score reform is not a proper solution to this problem because of its technical flaws in the process of score conversion. Percentile band score, despite some restrictions like using total raw score in admission, seems a compromised choice. To some extent, percentile band score, as a kind of simplified standard score, makes it possible to compare the scores of different subjects before adding them together while leaving some negative influence on teaching and learning. However, technically, percentile band score still needs improving given the existing practice of using Gaokao scores.