Código PHP:
$resultsubjects = array();
$query = $em->createQuery('SELECT a FROM ABCAdmissionBundle:SchoolUseSubject a');
$subjects = $query->getResult();
foreach ($subjects as $subject)
{
$materia = $subject->getSubject();
$SchoolUseResultstmp = new SchoolUseResults();
$SchoolUseResultstmp->setGrade($gradeABCIS);
$SchoolUseResultstmp->setSubject($subject);
$f = new SchoolUseResultsType();
$form_subjectstmp = $this->createForm($f, $SchoolUseResultstmp);
//Aca todo bien
ladybug_dump($form_subjectstmp);
$form_subjectstmp->handleRequest($request);
//Aca es donde imprimo los valores y me rellena todos con el ultimo registro
ladybug_dump($form_subjectstmp);
$SchoolUseResultstmp->setSubject($subject);
array_push($resultsubjects, $SchoolUseResultstmp);
$form_subjects[$materia] = $form_subjectstmp->createView();
}