public function countCorretasEscola($idEscola) { $exercicios = 0; $usuarioController = new UsuarioController(); $professores = $usuarioController->selectProfessorByEscola($idEscola); foreach ($professores as $professor) { $exercicios += $this->countCorretasProfessor($professor->getUsr_id()); } return $exercicios; }