The project entitled „The development of the professional knowledge of Pettkó equestrain school’s pupils during international mobilities" comes to existence within the framework of international cooperation of four countries, namely Slovakia, Ireland, Czech Republic and Hungary.The project is based on the needs formulated by the sending institution that the school is looking for ways to support the improvement of labor market opportunities for its students with the acquisition of new knowledge in the field of horse keeping and racing (galopp, carrige trotting and showjumping).Our specific aim is to involve our students to participate in internships abroad, during which they can increase their specific professional knowledge by the help of the host institution. Moreover, students could easily increase and strengthen their professional language skills in a foreign language environment. Besides, students can be part of an intercultural program. The basis of the implementation is the practical work program of the individual turns.The working language of the project is English, it is used in contacts among the partners as well as for the practical training. At the beginning of the project participants are trained by an English language and cultural preparation course.During the project, a total of eightteen students and three teachers (one for each turn) travel to the foreign partners. Three out of the students (one in each turn) come from disadvantaged background. The internship of the participants will be monitored by local assistants (one contact mentor for each turn) and our accompanying teacher.The students will complete their internship in the following institutions :1 Vocational School - Sala, Slovakia: students travel to Slovakia in the first shift (26/02/2017-20/03/2017) getting to know the horse-keeping methods in Slovakia, and the basics of showjumping racing. Six students and one accompanying teacher will participate there.2 Racing Academy & Centre of Education - Kildare, Ireland: in the Irish partner institution our students will increase their knowledge and skills related to traditional Irish horse breeding and galopp racing in the second shift (01/10/2017-23/10/2017). Six students and one accompanying teacher travel to Ireland.3 Sports and Horse Riding School – Prague-Velká Chuchle, Czech Republic: in the Czech host institution students will be familiar with the Czech horse racing at the third shift (04/03/2018-26/03/2018). They are also going to learn the methods of horse-breeding and keeping of the Czech Republic, and galopp and sulky racing. Six students and one accompanying teacher travel to Prague.As a result of the project the professional knowledge and skills of students will significantly improve as well as their English language skills develops. They will gain higher professional knowledge in fields of west and middle european horse-keeping and breeding, galopp racing, sulky racing and showjumping. Besides, they will gain professional as well as positive cultural experiences, which will be a major motivation for their future studies work.The accompanying teachers also develop professionally, their knowledge will expand and they can get to know methods that the school can embed into its own educational program in the future. After the end of each turns, our institution will spread the results of the project on local and other fora.These results will contribute to our aim that, with the spreading of them, the long-term effects of the project would integrate into the professional development efforts of our school in Hungary.