<thead>
            <th>#</th>
            <th>
                NIS <a class="asc" href="index.php?sort=nis&order=asc"><span>&#x25B2;</span></a><a class="asc" href="index.php?sort=nis&order=desc"><span>&#x25BC;</span></a>
            </th>
            <th>
                Nama Lengkap <a class="asc" href="index.php?sort=nama_lengkap&order=asc"><span>&#x25B2;</span></a><a class="asc" href="index.php?sort=nama_lengkap&order=desc"><span>&#x25BC;</span></a>
            </th>
            <th>Jenis Kelamin <a class="asc" href="index.php?sort=jenis_kelamin&order=asc"><span>&#x25B2;</span></a><a class="asc" href="index.php?sort=jenis_kelamin&order=desc"><span>&#x25BC;</span></a>
            </th>
            <th>Kelas <a class="asc" href="index.php?sort=kelas&order=asc"><span>&#x25B2;</span></a><a class="asc" href="index.php?sort=kelas&order=desc"><span>&#x25BC;</span></a>
            </th>
            <th>Jurusan <a class="asc" href="index.php?sort=jurusan&order=asc"><span>&#x25B2;</span></a><a class="asc" href="index.php?sort=jurusan&order=desc"><span>&#x25BC;</span></a>
            </th>
            <th>Alamat <a class="asc" href="index.php?sort=alamat&order=asc"><span>&#x25B2;</span></a><a class="asc" href="index.php?sort=alamat&order=desc"><span>&#x25BC;</span></a>
            </th>
            <th>Golongan Darah <a class="asc" href="index.php?sort=gol_darah&order=asc"><span>&#x25B2;</span></a><a class="asc" href="index.php?sort=gol_darah&order=desc"><span>&#x25BC;</span></a>
            </th>
            <th>Nama Ibu Kandung <a class="asc" href="index.php?sort=nama_ibu&order=asc"><span>&#x25B2;</span></a><a class="asc" href="index.php?sort=nama_ibu&order=desc"><span>&#x25BC;</span></a>
            </th>