[1] Prior to debuting in Morning Musume, she was as back-up dancer for Dorothy Little Happy.

[2] On 29 September 2011, at a concert at Nippon Budokan, which was part of Morning Musume Concert Tour 2011 Aki Ai Believe: Takahashi Ai Sotsugyō Kinen Special, it was announced that Ishida had passed the auditions alongside three other girls: Haruna Iikubo, Masaki Satō and Haruka Kudō, and would join Morning Musume.

[3] In October 2012, Ishida was announced as a member of the new Satoyama Movement unit, Harvest, alongside, Erina Ikuta, Masaki Satō and Akari Takeuchi.

[4] In March 2013, Ishida was announced as a member of the new Satoumi Movement unit, Plumeria.

On December 6, Ayumi Ishida officially graduated at the Morning Musume '24 Concert Tour Aki WE CAN DANCE !