Meitisa Vanya Simanjuntak and Rihan Lestari 2026. Implementation Of The Child Development Program At The Jakarta Class 1 Lpka Based On The Principle Of The Best Interests Of The Child: A Study Of The Gap Between Policy And Practice . International Journal of Education, Vocational and Social Science . 5, 02 (May 2026), 1783-1800. DOI:https://doi.org/10.63922/ijevss.v5i02.3503.