Complex sentence: In 2010, due to school board changes, Arts York was forced to change their program name to Arts Unionville and will only take students from the Markham area, except for piano and stringed instruments.
Split into simpler sentences: In 2010, due to school board changes, Arts York was forced to change their program name to Arts Unionville. However, in the 2009-10 school year, the program was renamed "Arts Unionville" and will only take students from the Markham area, except for piano and stringed instruments.