Erwin Macua, who works as a security guard, is set to graduate cum laude. Annie Perez, ABS-CBN News

After almost 20 years of working as a security guard at St. Theresa's College in Cebu City, Erwin Macua is set to join the students that he watches over, this time for his college graduation.

Macua will graduate cum laude on Saturday for his Bachelor of Elementary Education Major in General Education degree.

The 38-year-old, who hails from Trinidad, Bohol, juggled being a security guard, studying, and being a father of 3 children.

"Age is not a hindrance, poverty is not a hindrance. Just pursue your dream with the formula: hard work plus determination plus prayer and you will reach your aspirations in life," Macua said.

Macua said it has always been his dream tofinish his studies and that he wanted to be a teacher because he has developed a special affection for children.

"Education is a good course to deal with students and you can really change their lives," he said.

He initially used his small savings to pay for his first year in college and was lucky enough to be sponsored by an anonymous donor for his remaining years in school.

An inspiration to his classmates, Macua said he plans to continue his work as a security guard while self-reviewing for the licensure exams for teachers.