The present research aims to ascertain the relationship between working understanding, appreciation of work and career guidance and the performance of shadow teachers (Guru Pembimbing Khusus – GPK) in inclusive schools in Indonesia. Data were collected randomly from 168 shadow teachers of inclusive schools in Indonesia. The instrument used was a four-point Likert scale. The content was validated and the reliability wasexamined using Cronbach’s alpha. Data were collected through an online questionnaire. A multiple regression analysis was run to detect the relationship between independent and dependent factors. The research results show a significant positive relationship between performance of shadow teachers and working understanding, appreciation of work and career guidance in inclusive schools in Indonesia (R = 0.491; R2 = 0.481), with effective contribution of 48.1%. Therefore, working understanding, appreciation of work and career guidance simultaneously contributes to performance of shadow teachers ininclusive schools in Indonesia.