Kids Sitter, 2 Times a week in the afternoon from middle of September on

We are looking for a native english speaking Student, who picks up our Teenagers (13 and 15) from school 2x/ week and brings them home or to Sports, while making cconversation in english and help them with their english homeworks. Maybe cook something with them and play games. just 2-3 Hours in the afternoon. Please put a 00 or a + in the beginning of my telefonnumber. I couldnt place it. 
Kind regards Nina