Abstract: In Japan, new curriculum starting in the 2022 school year, all high school students are expected to learn the basics of programming and data science in the new course "Information I". In addition, the advanced course "Information II" deals with data science and the foundation of AI. We propose an online data analysis education tool called "Connect DB". Students can use it easily for data analysis. We report the outline of this tool and lesson in a University and high school classes.