Simplify the following text for a Grade 6 native English-speaking person.
Original: He studied at the Shulamit Conservatory and at the Academy of Music in Tel Aviv before moving to the United States to study at the Juilliard School with the great violin pedagogue , Ivan Galamian , and his assistant Dorothy DeLay .
Simplified: He studied at the Academy of Music in Tel Aviv . Then he moved to the United States to study at the Juilliard School with Ivan Galamian and Dorothy DeLay .