Any school can call themselves what they want. I can call my school the Modern Lithuanian School of the Arts - not a Lithuanian or art teacher in sight.

Unfortunately, it's a case of caveat emptor - as a consumer (and you are a consumer) you have some responsibility to do some investigating, especially as this type of thing happens in all areas of education throughout the gulf region. Ask other parents, get recommendations, if possible - visit while school is in session (not always an option I know).

Your naivtee has been taken advantage of, but I don't know of any recourse unless you contact the Ministry of Education with documentation of fraudulant acts and information provided by the school