You should be write it in English and explain your motivation for applying to the Global Master’s in ELT Leadership.
You should address the following topics:
Why you are applying to this program
Any relevant experience (e.g. in teaching, education, etc.)
What particular aspects of the program interest you
What you hope to gain from the program
Any relevant work that you plan to do during the program
Your professional plans for the future after you graduate from the program
700 words maximum