Is Chio's School Road Finished? Yes — Complete in 9 Volumes
Yes — Chio's School Road is complete. It ended in Japan with 9 volumes; the final volume came out in September 2018.
Everything below reflects the Japanese edition — the source of truth that runs months or years ahead of English releases — computed from official publication records.
Volumes in Japan: 9 (latest: ちおちゃんの通学路 9, 2018-09)
Next volume in Japan: not yet announced in Japan.
Status: Yes — Chio's School Road is complete. It ended in Japan with 9 volumes; the final volume came out in September 2018.
Serialized since: 2014