The objective of this study was to describe the implementation of integrated education in Nur Hidayah Islamic Integrated Senior Secondary School of Sukoharjo, Central Java, Indonesia. It used the analytic descriptive-qualitative method with the case study approach. There are seven main principles of integration in the learning process, namely: integration of human potentials, integration of institutions, integration of curriculum, integration of learning domains, integration of three centers of education, integration of theory and practice, and integration of learning activities. The impact of the integrated education can form intact personality which encompasses religiosity, morality, intellectuality, high motivation, leadership, healthy lifestyle, self-reliance, work ethics and discipline, and socio-political awareness. Thus, models of integrated education can be implemented in senior secondary schools.

This work presents the realisation of such principles of communicative-cognitive approach as the principle of integrated kinds of speech activity, the principle of systematicity, the principle of functionality in correlation with the principle of information transfer, the principle of unity of training, education and development, the principle of the cognitive gap, the principle of authenticity based on the samples of exercises of lexico-grammatical competence and authentic construction projects for future civil engineers. The English language lexico-grammatical competence model demonstrates the structure of its content on the level of knowledge and skills; preparatory, main, and advanced stages of linguistic competence formation in correlation with such levels of understanding of professionally-oriented texts as verbally-visual complex has been presented. The main peculiarities of the model’s content have been highlighted. The system of lexico-grammatical competence formation includes three complexes of exercises: actualisation of lexico-grammatical knowledge on the level of the lexical unit and sentence (reading, speaking); on the formation and improvement of lexico-grammatical skills on the level of the lexical unit, sentence (reading, speaking); the formation and improvement of lexico-grammatical skills on the level of minitexts in speaking and components of the verbal- -visual complex (statistical tables, notes) in reading, on the formation and improvement of lexico-grammatical skills on the level of the sketch construction project as verbal-visual complex has been explained and demonstrated. The samples of exercises in lexico-grammatical competence formation within the communicative-cognitive approach have been presented. The explanation of the communicative- cognitive approach’s principles with the help of the system of exercises has been introduced. The pedagogical experiment verifies the effectiveness of lexico-grammatical competence formation in the framework of the communicative-cognitive approach for civil engineering students with the help of one factor disperse analysis. Twelve students from each group (CE21, TPD22, TBC23) have been chosen to compare their results before the experimental test, control test, and after the experimental test within this approach.