Seven schools in Wajima City, Ishikawa Prefecture, reopened on Tuesday following the powerful New Year's Day earthquake.
As many as 65 public schools in 9 cities and towns in the prefecture closed at one point, but all have now resumed classes.
The six elementary schools and one junior high school in Wajima are using a prefectural senior high school in the city center.
Children and their guardians appeared from around 8:30 in the morning and greeted their teachers. A third-grader said she's happy to see her friends and wants to play with them.
The girl's mother said her daughter was frightened after the earthquake, but is calm now and happy to finally see her friends.
The city's board of education said the children will be shown around the high school on their first day and receive mental care from the school counselor.
Officials say they plan to provide online classes using tablets for children who have evacuated outside the city and others who are unable to commute.