- Teacher: Devianti Sagala
- Teacher: Rastama Sigalingging
- Teacher: Devianti Sagala
- Teacher: Rastama Sigalingging
- Teacher: Wilsa Road Betterment Sitepu
- Teacher: Sauh Hwee Teng
- Teacher: Galumbang Hutagalung
- Teacher: Devianti Sagala
- Teacher: Rastama Sigalingging
- Teacher: Rasinta Ria Ginting
- Teacher: Devianti Sagala
- Teacher: Rastama Sigalingging
- Teacher: Yusuf Ronny Edward
- Teacher: Devianti Sagala
- Teacher: Rastama Sigalingging
- Teacher: Aremi Evanta Br Tarigan