iarjhssIARJHSSIARJHSS2708-626710.47310/iarjhss.2024.v05.i02.007Development of Assessment Instruments for Major Selection at Tana Toraja State Vocational High SchoolLinceLenyDevelopment of Assessment Instruments for Selecting Majors in Vocational High Schools.Objectives: (1)To analyze the needs for the development of a Department Selection Assessment Instrument at SMKN 1 Tana Toraja.(2)To design a prototype of the Department Selection Assessment Instrument at SMKN 1 Tana Toraja.(3)To produce a Department Selection Assessment Instrument at SMKN 1 Tana Toraja that is suitable for use.Method: This study uses the Research and Development (R&D) approach, adopting the 4D development model. Results:(Define) The needs analysis (need assessment) reveals that the widespread cases of incorrect department selection are due to peer influence, parental choice, and lack of information, which subsequently lead to academic stress, decreased motivation to learn, low cumulative GPA, department switching, and even transferring schools. Generally, the methods used in previous studies to assist prospective vocational students and schools with department selection focus on aligning students’ talents with the chosen department. However, various sources recommend considering both talents and interests for vocational students. Therefore, the developed product is more comprehensive as it accommodates both talents and interests. (Design) The prototype design aims to measure "the interests and talents of prospective vocational students (grade IX SMP) according to the available vocational programs (departments) at SMKN 1 Tana Toraja." Measurement domains/dimensions include(1)Measuring interest:(a) Student's interest in learning (b) Interest in pursuing further studies(c) Interest in choosing a department. (2) Measuring the basic understanding of prospective vocational students (grade IX SMP) regarding the vocational programs available at SMKN 1 Tana Toraja, which include:(a) Automotive Engineering/Light Vehicle Engineering (TKR) (b) Welding Engineering (c) Audio-Video Engineering (Electronics) (d) Electrical Power Installation Engineering (TITL) (e)Computer and Network Engineering (TKJ) (f) Design, Modelling, and Building Information Engineering (DPIB) (g) Construction and Housing Engineering.(Develop) The Department Selection Assessment Instrument at SMKN 1 Tana Toraja is considered "suitable" for use because it meets all required criteria, including content validation by experts, analysis of responses from prospective vocational students (grade IX SMP), validity testing, reliability testing, and CFA testing during small and large group trials. (Disseminate) The final product has been packaged into a user guidebook with an attractive presentation.