137 JIPTEK, Vol.16 No.2 , 2023 DOI: https://doi.org/10.20961/jiptek.v16i2.67756 JIPTEK: Jurnal Ilmiah Pendidikan Teknik dan Kejuruan Jurnal Homepage: https://jurnal.uns.ac.id/jptk Architectural Conditions of a Jakarta State Vocational School: A Child- friendly School Design Perspective Ailsa Raihanah Utami 1* , Mokhamad Syaom Barliana 2 , Riskha Mardiana 3 1* Architectural Engineering Education Study Program, Universitas Pendidikan Indonesia 2,3 Department of Architectural Engineering Education Study Program, Universitas Pendidikan Indonesia Email: ailsaraihanah@upi.edu ABSTRACT This research aims to explain the design principles of child-friendly vocational schools, describe the architectural conditions of the facilities and infrastructure in Jakarta 1 State Vocational School, and explain their suitability based on the design principles of child-friendly vocational schools. This research uses a qualitative approach with a descriptive method. Data collection techniques in this research use observation and documentation. The object of this research is the facilities and infrastructure of Jakarta 1 State Vocational School in the scope of a general learning room, a supporting learning room, and a specific learning room for construction and property engineering expertise. The final result explains that the architectural conditions of the facilities and infrastructure in Jakarta 1 State Vocational School are very suitable following the design principles of a child-friendly vocational school, including safety, health, comfort, easiness, and security requirements. The final suitability score is 74.5%. The most suitable assessment is on the Safety criteria, while the lowest is on the Comfort criteria. Keywords: Child-friendly School, Child-friendly Vocational School, School Facilities, Infrastructure, Vocational High School. JIPTEK: Jurnal Ilmiah Pendidikan Teknik dan Kejuruan Vol 16 Issue 2 2023 Received:26/11/22 Revised:31/05/23 Accepted: 31/05/23 Online:25/06/23 DOI: https://doi.org/10.20961/jiptek.v16i2.67756 © 2023 The Authors. Published by Universitas Sebelas Maret. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). INTRODUCTION Vocational secondary education will be attended by students aged 16-18 years who categorized as a school-age children who are classified as teenagers (Kesehatan, 2014). Hasselt and Hersen argued that "adolescence is also known as the period "in between period", which is a period when individuals can no longer be classified as children but are immature when classified as adults" (Priatini, Latifah, & Guhardja, 2008). At this time, children will continue to make adjustments to the environment around them. One type of superior development in adolescents is the existence of "social cognition". In this development, adolescents have the ability to understand the people around them. This ability to recognize, can support adolescents to be able to seek and relate socially with their peers (Fatmawaty, 2017).