A mobile application for checking scores and test papers for students in schools that use the "Cloud School + Marking" product. Basic services such as checking scores, checking rankings, and viewing own test papers are permanently free for students. It also provides free university information to all students. Based on students' usual test scores (applicable to middle school and high school students), through big data analysis, it predicts what kind of university students can get into with their current grades or how far they are from their target university. How many points, and then encourage students to study hard, work hard for the target university, and improve their grades.