Agrupar atividades conforme disciplina!?

[Agrupar atividades conforme disciplina!?]

Minha necessidade é agrupar os conceitos conforme a disciplina, segue o modelo:

Como conseguir fazer: (Não estou conseguindo agrupar em uma "disciplina", apenas. Como ficou:

 

<?php
  function integerToRoman($integer)
  {
    $integer = intval($integer);
    $result = '';
  
    $lookup = array(
      'M'  => 1000,
      'CM' => 900,
      'D'  => 500,
      'CD' => 400,
      'C'  => 100,
      'XC' => 90,
      'L'  => 50,
      'XL' => 40,
      'X'  => 10,
      'IX' => 9,
      'V'  => 5,
      'IV' => 4,
      'I'  => 1
    );
  
    foreach($lookup as $roman => $value){
      $matches = intval($integer/$value);
      $result .= str_repeat($roman,$matches);
      $integer = $integer % $value;
    }
  
    return $result;
  }
?>

<div id="print">
  <link rel="stylesheet" href="<?php echo base_url('assets/css/bootstrap.css'); ?>">
  <script src="assets/js/jquery-1.11.0.min.js"></script>

  <style>
    hr {
      display: block;
      height: 1px;
      border: 0;
      border-top: 1px solid black;
      margin: 1em 0;
      padding: 0;
    }

    .mt-1 {
      margin-top: 10px;
    }

    .border-top { border-top: 1px solid; }
    .border-left { border-left: 1px solid; }
    .border-right { border-right: 1px solid; }
    .border-bottom { border-bottom: 1px solid; }
  </style>

  <?php
    $class = $this->db->get_where('class', array(
      'class_id' => $class_id,
    ))->row();
    
    $section = $this->db->get_where('section', array(
      'section_id' => $section_id,
    ))->row();

    $teacher = $this->db->get_where('teacher', array(
      'teacher_id' => $section->teacher_id,
    ))->row();

    $students = $this->db->get_where('enroll', array(
      'class_id' => $class->class_id,
      'section_id' => $section->section_id,
    ))->result_array();

    $subjects = $this->db->get_where('subject', array(
      'section_id' => $section_id,
    ))->result_array();

    $signatures = $this->db->get('signatures')->result_array();

    $print = $this->db->get('print_settings')->row();

    foreach($students as $student) {
    $stu = $this->db->get_where('student', array(
      'student_id' => $student['student_id'],
    ))->row();

    for($i = 1; $i <= 4; $i++) {
      $exam = $this->db->get_where('exam', array(
        'exam_id' => $i,
      ))->row();
  ?>

  <div class="row" style="margin-top: 5px;">
    <div class="col-xs-12">
      <div class="col-xs-2" style="margin-left: 0px; padding: 0;">
        <?php
        $fName = $print->logo;
        $ext_pos = strrpos($fName, '.');
        $ext = substr($fName, $ext_pos);
        $fName = substr($fName, 0, $ext_pos);
        $fName = str_replace('.', '_', $fName) . $ext;
        $fName = preg_replace('/\s+/', '_', $fName);
        ?>
        <img src="<?= base_url('/uploads/' . $fName); ?>" width="113" height="100" /> <br />
      </div>
      <div class="col-xs-10" style="margin-left: 0px; padding: 0; line-height: 5px;">
        <p style="font-weight: 700; font-size: 1.1em;"><?= $system_name ?></p>
        <p><?= $print->name ?></p>
        <p>CNPJ: <?= $print->cnpj ?></p>
        <p>Endereço: <?= $print->address ?></p>
        <p>Bairro: <?= $print->neighborhood ?></p>
        <p>Telefone: <?= $print->phone ?> Email: <?= $print->email ?></p> <br><br>
        <p><b>Resolução</b>: <?= $print->resolution ?></p>
      </div>
    </div>
  </div>

  <div class="col-xs-12 mt-3">
    Professor (a): <?= $teacher->name ?>
  </div>
  <div class="col-xs-12 mt-1">
    Aluno (a): <?= $stu->name ?>
  </div>
  <div class="col-xs-4 mt-1">
    Ano/Turma: <?= $class->name ?> / <?= $section->name ?>
  </div>
  <div class="col-xs-2 mt-1">
    Ano Letivo: <?= $sessional_year ?>
  </div>
  <div class="col-xs-3 mt-1">
    Bimestre: <?= integerToRoman($i) ?>
  </div>
  <div class="col-xs-3 mt-1">
    Encerrado em: <?= $exam->comment ?>
  </div>

  <div class="col-xs-12">

    <div class="col-xs-12 text-center">
      <h4><strong><?php echo $i.'º Bimeste' ?></strong></h4>
    </div>

    <?php
      $curType = '';

      if(strpos($class->name, '1º Ano') !== false)
        $curType = '1º Ano';
      if(strpos($class->name, '2º Ano') !== false)
        $curType = '2º Ano';

      $conceitos = [];

      foreach($subjects as $subject) {
        array_push($conceitos, $this->db->get_where('learning_goals', array(
          'type' => $curType,
          'eixos' => $i.'º Bimestre',
          'subject_id' => $subject['subject_id'],
        ))->result_array());
      }

      $eixos = [];
      $_subjects = [];
      
      foreach($conceitos as $conceito) {

       if(in_array($conceito['eixos'], $eixos))
         continue;
       array_push($eixos, $conceito['eixos']);
        
            $_descs = [];
            $descs = [];
            
            foreach($subjects as $subject) {
              array_push($_descs, $this->db->get_where('learning_goals', array(
                'type' => $curType,                
                'eixos' => $i.'º Bimestre',
                'subject_id' => $subject['subject_id'],
              ))->result_array());
            }
              
            foreach($_descs as $_desc) {
              foreach($_desc as $_des) {
                array_push($descs, $_des);
              }
            }

            foreach($descs as $key => $desc) {
              $descStatus = $this->db->get_where('learning_goals_status', array(
                'exam_id'     => $i,
                'conceito_id' => $conceito['id'],
                'student_id'  => $stu->student_id,
              ))->row();

              $subject = $this->db->get_where('subject', array('subject_id' => $desc['subject_id'],
              ))->row();

              $key++;
          ?>
            <div class="col-xs-11  text-center">HABILIDADES QUE A CRIANÇA DEMONSTRA EM <?= $subject->name?></div>
            <div class="col-xs-11 border-top border-bottom border-left border-right"><?= $desc['sys_id'] ?>. <?= $desc['description'] ?></div>
            <div class="col-xs-1 border-bottom border-top border-right"> <?= $descStatus->status ?></div>
        <?php
          }
        ?>
    <?php
      }
    ?>
</div>

<div class="col-xs-12 mt-3 text-center" style="padding-left: 0; padding-right: 0;">
    <div class="col-xs-6" style="margin-top: 15px">
      <hr>
      <p class="text-center"><strong><?= $teacher->name ?></strong><br>
      Professor(a)</p>
    </div>
    <div class="col-xs-6" style="margin-top: 15px">
      <hr>
      <p class="text-center"><strong><?= $signatures[2]['name'] ?></strong><br>
      <?= $signatures[2]['post'] ?></p>
    </div>
    <div class="col-xs-6" style="margin-top: 10px">
      <hr>
      <p class="text-center"><strong><?= $signatures[0]['name'] ?></strong><br>
      <?= $signatures[0]['post'] ?></p>
    </div>
    <div class="col-xs-6" style="margin-top: 10px">
      <hr>
      <p class="text-center"><strong><?php echo $this->db->get_where('parent',array('parent_id'=>$stu->parent_id))->row()->name; ?></strong><br>
      Responsável pelo(a) aluno(a)</p>
    </div>
  </div>
  <?php
    }
  }
  ?>
</div>

<script type="text/javascript">
  jQuery(document).ready(function($) {
    var elem = $('#print');
    PrintElem(elem);
    Popup(data);

  });

  function PrintElem(elem) {
    Popup($(elem).html());
  }

  function Popup(data) {
    var mywindow = window.open('', 'my div', 'height=400,width=600');
    mywindow.document.write('<html><head><title></title>');
    //mywindow.document.write('<link rel="stylesheet" href="assets/css/print.css" type="text/css" />');
    mywindow.document.write('</head><body >');
    //mywindow.document.write('<style>.print{border : 1px;}</style>');
    mywindow.document.write(data);
    mywindow.document.write('</body></html>');

    mywindow.document.close(); // necessary for IE >= 10
    mywindow.focus(); // necessary for IE >= 10

    mywindow.print();
    mywindow.close();

    return true;
  }
</script>