Penelitian ini bertujuan untuk mengetahui efektivitas pelaksanaan program pembelajaran berbasis tematik ditinjau dari komponen konteks, input, proses dan produk. Penelitian ini termasuk penelitian evaluasi, Efektivitas masing-masing faktor sesuai dengan model CIPP (konteks, input, proses dan produk). Subjek penelitian ini adalah siswa, guru, komite, orang tua siswa TK Shanti Kumara II Kelurahan Sading Mengwi Badung. Data dikumpulkan dengan menggunakan kuesioner dan lembar observasi. Data dianalisis dengan analisis deskriptif. Hasil analisis menunjukkan bahwa pelaksanaan program pembelajaran berbasis tematik pada pada TK Shanti Kumara II Kelurahan Sading Mengwi Badung tergolong efektif dilihat dari komponen konteks, input, proses, dan produk dengan hasil (+ + + +). Artinya; pada komponen konteks efektif, pada komponen input efektif, pada komponen proses efektif, dan pada komponen produk efektif. Pelaksanaan program pembelajaran berbasis tematik perlu mendapat perhatian penuh sehingga berdampak positif terhadap produk, yakni perilaku dan kemampuan dasar siswa terus meningkat. Berdasarkan temuan tersebut dapat disimpulkan bahwa pelaksanaan program pembelajaran berbasis tematik pada TK Shanti Kumara II Kelurahan Sading Mengwi Badung tergolong dalam kategori efektif. Untuk itu perbaikan-perbaikan, baik dari konteks, input, maupun proses sehingga selalu dapat menghasilkan produk yang sesuai dengan tujuan pembelajaran berbasis tematik.
Kata Kunci : studi evaluasi, pembelajaran berbasis tematik, perilaku, kemampuan dasar This research was conducted in order to figure out the effectiveness of the implementation of thematic based learning program considered from the components of contexts, input, process and product. The effectiveness of each factors were analyzed conformed to CIPP (Context, Input, Process and Product) model. The subjects of this research were students, teachers, committees and students' parents of Shanti Kumara II Kindergarten in Sading Village, Mengwi, Badung Regency. Data were collected through questionnaires and observation sheets. Data were analyzed by descriptive analysis. The results of data analysis showed that the implementation of the thematic based learning program on Shanti Kumara II Kindergarten in Sading Village, Mengwi, Badung Regency was categorized effective considered to the components of context, input, process and product with result (+ + + +). Which meant: it was effective in the component of context, effective in the component of input, effective in the component of process and effective the component of product. The implementation of thematic based learning program needed full attention therefore affect effectively toward the product that was the improvement of students' behavior and basic competence. Based on the above findings, it can be concluded that the implementation of thematic based learning program in Shanti Kumara II Kindergarten Sading Village, Mengwi, Badung regency was categorized effective. Hence, improvements were needed in terms of context, input and also process therefore produced product that fulfilled the aim of thematic based learning.keyword : evaluative study, thematic based learning, behavior, basic competenc