Lopez performs at school graduation

Jennifer Lopez has performed at a school graduation ceremony in New York.

The singer was contacted by pupils at Staten Island's autistic school P.S 37 after they watched a video of her single 'Let's Get Loud' in class.

Teacher Kathy Amati hoped the Latino popstar would send pictures and autographs in return.

However, Lopez surprised the students by performing at the 10 and 11-year-olds' graduation bash on Tuesday, singing the track they had studied in class.