HI Mariam,

In general the schools offer more than one UK exam board depending on the subjects, so I cannot definitively answer your question.  The following link on the KHDA website will provide you with details of UK curriculum schools rated Good.  You would then need to check the school inspection reports or the schools’ websites to find out more about the courses offered and the exam board – http://www.khda.gov.ae/en/DSIB/Reports?isSearched=1&islight=_islight&school=&textFilter=&rating=Good&curriculum=UK&grade=&fee=&location=&isNewSchool=0&tab=tab-school

For Sharjah, there is no rating system of the same type as in Dubai and Abu Dhabi; you will need to check with the UK curriculum schools there – Sharjah Education Zone can assist you with this.