Simplify the following text for a Grade 12 native English-speaking person.
Original: Passer rating ( known as passing efficiency or pass efficiency in NCAA football ) is a measure of the performance of quarterbacks or any other passers in American football and Canadian football .
Simplified: Passer rating ( known as passing efficiency or pass efficiency in NCAA football ) is a measure of how well a quarterback , or any other passer in American and Canadian football , played .