Simplify the following text for a Grade 12 native English-speaking person.
Original: The Kate Greenaway Medal , established in her honor in 1955 , is awarded annually by the Chartered Institute of Library and Information Professionals in the UK to an illustrator of children 's books .
Simplified: The Kate Greenaway Medal is awarded every year by the UK Chartered Institute of Library and Information Professionals to an illustrator of children 's books .