She graduated Bachelor of Music in Music Education from the University of the Philippines College of Music after finishing her Diploma in Creative Performing Music and Arts in Voice. Leleng is the former Subject Area Coordinator for Music at the Ateneo de Manila Grade School and is now teaching Kinder and Grade 6. She has also taught Grs. 1,2,3,4,5 and 7.
She received her Certificate in Teaching Music with Kodály Emphasis in 2004, training under Judit Hartyanyi and has, since then, been the Course Director of the Kodály Society of the Philippines’ summer course and short seminars. She also handles the Level I Practicum in the Summer Certificate Course. In 2007, she was part of the team of Dr. Miriam Factora which worked with Dr. Mary Goetze in teaching the World Youth Choir how to perform the “Tinikling” during the 18th International Kodály Symposium in Columbus, Ohio, USA. She attended the Asia Kodály Symposium in Kaohsiung, Taiwan in 2016 and the International Kodály Symposium in Malaysia in 2019. She finished her Master of Arts in Music Education with Emphasis in Kodály Teaching at the Philippine Women’s University in 2012. She is the current President of the Kodály Society of the Philippines.