1 / 3   Poonsri Seangnual, who studies at the School for the Elderly in Chiang Rak Noi subdistrict, leaves her house wearing her school uniform, in Ayutthaya, Thailand. /VCG Photo

2 / 3   "I really like going to school. I gained knowledge and it's really fun. I have a lot of friends, know a lot more people," said Seangnual. "I feel lonely whenever I don't go to school, I want to go back and meet my friends. I miss the classroom." /VCG Photo

3 / 3   Her story is a sign of Thailand's rapidly aging population. There are 7.5 million people over 65 years in Thailand, and the number is expected to rise to 17 million by 2040. /VCG Photo