Children from the indigenous group "Aeta" attend class during the first day of classes in temporary classrooms of Diaz Elementary school in Pampanga Province, the Philippines, June 3, 2019. Temporary classrooms were set up after the Aeta community's classrooms were destroyed by the earthquake last April, as today marks the first day of new school year in the Philippines. (Photos: Xinhua)

Children from the indigenous group "Aeta" attend class during the first day of classes in temporary classrooms of Diaz Elementary school in Pampanga Province, the Philippines, June 3, 2019. Temporary classrooms were set up after the Aeta community's classrooms were destroyed by the earthquake last April, as today marks the first day of new school year in the Philippines.

A boy from the indigenous group "Aeta" yawns as children attend class during the first day of classes in temporary classrooms of Diaz Elementary school in Pampanga Province, the Philippines, June 3, 2019. Temporary classrooms were set up after the Aeta community's classrooms were destroyed by the earthquake last April, as today marks the first day of new school year in the Philippines.

Children from the indigenous group "Aeta" attend class during the first day of classes in temporary classrooms of Diaz Elementary school in Pampanga Province, the Philippines, June 3, 2019. Temporary classrooms were set up after the Aeta community's classrooms were destroyed by the earthquake last April, as today marks the first day of new school year in the Philippines.

A teacher gives lessons to children from the indigenous group "Aeta" during the first day of classes in temporary classrooms of Diaz Elementary school in Pampanga Province, the Philippines, June 3, 2019. Temporary classrooms were set up after the Aeta community's classrooms were destroyed by the earthquake last April, as today marks the first day of new school year in the Philippines.

Children from the indigenous group "Aeta" attend class during the first day of classes in temporary classrooms of Diaz Elementary school in Pampanga Province, the Philippines, June 3, 2019. Temporary classrooms were set up after the Aeta community's classrooms were destroyed by the earthquake last April, as today marks the first day of new school year in the Philippines.

A girl from the indigenous group "Aeta" walks to school during the first day of classes in temporary classrooms of Diaz Elementary school in Pampanga Province, the Philippines, June 3, 2019. Temporary classrooms were set up after the Aeta community's classrooms were destroyed by the earthquake last April, as today marks the first day of new school year in the Philippines.

A boy from the indigenous group "Aeta" carries his bag over his head as he attends class during the first day of classes in temporary classrooms of Diaz Elementary school in Pampanga Province, the Philippines, June 3, 2019. Temporary classrooms were set up after the Aeta community's classrooms were destroyed by the earthquake last April, as today marks the first day of new school year in the Philippines.

A teacher gives lessons to children from the indigenous group "Aeta" during the first day of classes in temporary classrooms of Diaz Elementary school in Pampanga Province, the Philippines, June 3, 2019. Temporary classrooms were set up after the Aeta community's classrooms were destroyed by the earthquake last April, as today marks the first day of new school year in the Philippines.

Children from the indigenous group "Aeta" walk to school during the first day of classes in temporary classrooms of Diaz Elementary school in Pampanga Province, the Philippines, June 3, 2019. Temporary classrooms were set up after the Aeta community's classrooms were destroyed by the earthquake last April, as today marks the first day of new school year in the Philippines.

A boy from the indigenous group "Aeta" carries his bag over his head as he attends class during the first day of classes in temporary classrooms of Diaz Elementary school in Pampanga Province, the Philippines, June 3, 2019. Temporary classrooms were set up after the Aeta community's classrooms were destroyed by the earthquake last April, as today marks the first day of new school year in the Philippines.

Children from the indigenous group "Aeta" attend class during the first day of classes in temporary classrooms of Diaz Elementary school in Pampanga Province, the Philippines, June 3, 2019. Temporary classrooms were set up after the Aeta community's classrooms were destroyed by the earthquake last April, as today marks the first day of new school year in the Philippines.

A mother and her son from the indigenous group "Aeta" prepare for school during the first day of classes in temporary classrooms of Diaz Elementary school in Pampanga Province, the Philippines, June 3, 2019. Temporary classrooms were set up after the Aeta community's classrooms were destroyed by the earthquake last April, as today marks the first day of new school year in the Philippines.

Children from the indigenous group "Aeta" sing during the first day of classes in temporary classrooms of Diaz Elementary school in Pampanga Province, the Philippines, June 3, 2019. Temporary classrooms were set up after the Aeta community's classrooms were destroyed by the earthquake last April, as today marks the first day of new school year in the Philippines.

A teacher gives lessons to children from the indigenous group "Aeta" during the first day of classes in temporary classrooms of Diaz Elementary school in Pampanga Province, the Philippines, June 3, 2019. Temporary classrooms were set up after the Aeta community's classrooms were destroyed by the earthquake last April, as today marks the first day of new school year in the Philippines.

A teacher gives lessons to children from the indigenous group "Aeta" during the first day of classes in temporary classrooms of Diaz Elementary school in Pampanga Province, the Philippines, June 3, 2019. Temporary classrooms were set up after the Aeta community's classrooms were destroyed by the earthquake last April, as today marks the first day of new school year in the Philippines.