What kind of anime is this?

It's about a traditional high school in Chiyoda-ku, Tokyo, called Yonagisaka Gakuin, which is facing a crisis because the number of students has plummeted, and the school is in danger of being closed down. Nine young girls come up with a brilliant idea - to become idols. If they become idols, the school's reputation will increase and the number of students will rise. As a result, the nine young girls with distinctive personalities decide to work together to become idols, hoping to save their favorite school by increasing the number of students with their idol fame